# centos

Published articles for centos.

This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles.

## Firewalld, UFW y nftables en Linux

DevFeed: [Firewalld, UFW y nftables en Linux](<https://devfeed.tech/articles/firewalld-ufw-y-nftables-en-linux-34057.md>)

Original publisher: [Read original article](<https://tengoping.com/blog/firewalld-nftables-seguridad-red-linux/>)

Author: Antonio Pérez

Published: 2026-01-21T00:00:00Z

Content type: tutorial

Language: es

Sources: [tengoping.com](<https://devfeed.tech/sources/tengoping-com.md>)

Topics: [Firewall](<https://devfeed.tech/topics/firewall.md>), [Linux](<https://devfeed.tech/topics/linux.md>), [centos](<https://devfeed.tech/topics/centos.md>), [Debian](<https://devfeed.tech/topics/debian.md>), [Fail2ban](<https://devfeed.tech/topics/fail2ban.md>)

Tags: [centos](<https://devfeed.tech/tags/centos.md>), [debian](<https://devfeed.tech/tags/debian.md>), [fail2ban](<https://devfeed.tech/tags/fail2ban.md>), [firewall](<https://devfeed.tech/tags/firewall.md>), [linux](<https://devfeed.tech/tags/linux.md>), [rate-limiting](<https://devfeed.tech/tags/rate-limiting.md>), [ssh](<https://devfeed.tech/tags/ssh.md>)

### AI overview

A practical Spanish-language guide to managing Linux firewall rules with firewalld, UFW, and nftables. It explains runtime versus permanent rules, rich rules and NAT, rate limiting, SSH protection, and persistence after reboot, with warnings about avoiding lockout during remote administration.

### Source excerpt

Firewalld, UFW y nftables: reglas permanentes vs runtime, rate limiting, persistencia tras reinicio y migración desde iptables.

## GIMP 3.0 Released With Updated UI, Wayland Support, Improved File Compatibility, and Plugin API Changes

DevFeed: [GIMP 3.0 Released With Updated UI, Wayland Support, Improved File Compatibility, and Plugin API Changes](<https://devfeed.tech/articles/download-of-the-day-gimp-3-0-is-finally-here-41958.md>)

Original publisher: [Read original article](<https://www.cyberciti.biz/linux-news/download-of-the-day-gimp-3-0-is-finally-here/>)

Author: Vivek Gite

Published: 2025-03-18T03:45:26Z

Content type: release

Language: en

Sources: [nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format (RSS/FEED)](<https://devfeed.tech/sources/nixcraft-linux-tips-hacks-tutorials-and-ideas-in-blog-format-rss-feed.md>)

Topics: [Development](<https://devfeed.tech/topics/development.md>), [Linux](<https://devfeed.tech/topics/linux.md>), [CSS](<https://devfeed.tech/topics/css.md>), [Wayland](<https://devfeed.tech/topics/wayland.md>), [API](<https://devfeed.tech/topics/api.md>), [Compression](<https://devfeed.tech/topics/compression.md>), [file](<https://devfeed.tech/topics/file.md>), [format](<https://devfeed.tech/topics/format.md>), [export](<https://devfeed.tech/topics/export.md>), [import](<https://devfeed.tech/topics/import.md>)

Tags: [api](<https://devfeed.tech/tags/api.md>), [centos](<https://devfeed.tech/tags/centos.md>), [compression](<https://devfeed.tech/tags/compression.md>), [css](<https://devfeed.tech/tags/css.md>), [debian-linux](<https://devfeed.tech/tags/debian-linux.md>), [downloads](<https://devfeed.tech/tags/downloads.md>), [export](<https://devfeed.tech/tags/export.md>), [file](<https://devfeed.tech/tags/file.md>), [format](<https://devfeed.tech/tags/format.md>), [freebsd](<https://devfeed.tech/tags/freebsd.md>), [gimp](<https://devfeed.tech/tags/gimp.md>), [import](<https://devfeed.tech/tags/import.md>), [improvements](<https://devfeed.tech/tags/improvements.md>), [linux](<https://devfeed.tech/tags/linux.md>), [linux-news](<https://devfeed.tech/tags/linux-news.md>), [macos](<https://devfeed.tech/tags/macos.md>), [new-features](<https://devfeed.tech/tags/new-features.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [plugins](<https://devfeed.tech/tags/plugins.md>), [release](<https://devfeed.tech/tags/release.md>), [sysadmin](<https://devfeed.tech/tags/sysadmin.md>), [unix](<https://devfeed.tech/tags/unix.md>), [upgrades](<https://devfeed.tech/tags/upgrades.md>), [version](<https://devfeed.tech/tags/version.md>)

### AI overview

GIMP 3.0 was released on March 16, 2025. The release adds a GTK3 interface, HiDPI and tablet improvements, Wayland support, CSS-based themes, updated icons, broader file-format compatibility, painting and text improvements, and updates to the core plugin API.

### Source excerpt

Wow! After years of hard work and countless commits, we have finally reached a huge milestone: GIMP 3.0 is officially released! I am excited as I write this and can't wait to share some incredible new features and improvements in this release. GIMP 2.10 was released in 2018, and the first development version of GIMP 3.0 came out in 2020. GIMP 3.0 released on 16/March/2025. Let us explore how to download and install GIMP 3.0, as well as the new features in this version. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post Download of the day: GIMP 3.0 is FINALLY Here! appeared first on nixCraft.

## Rsync Versions 3.3.0 and Earlier Affected by Multiple Security Vulnerabilities

DevFeed: [Rsync Versions 3.3.0 and Earlier Affected by Multiple Security Vulnerabilities](<https://devfeed.tech/articles/critical-rsync-vulnerability-requires-immediate-patching-on-linux-and-unix-systems-41957.md>)

Original publisher: [Read original article](<https://www.cyberciti.biz/linux-news/cve-2024-12084-rsyn-security-urgent-update-needed-on-unix-bsd-systems/>)

Author: Vivek Gite

Published: 2025-01-15T18:04:24Z

Content type: news

Language: en

Sources: [nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format (RSS/FEED)](<https://devfeed.tech/sources/nixcraft-linux-tips-hacks-tutorials-and-ideas-in-blog-format-rss-feed.md>)

Topics: [rsync](<https://devfeed.tech/topics/rsync.md>), [Vulnerabilities](<https://devfeed.tech/topics/vulnerabilities.md>), [Exploit](<https://devfeed.tech/topics/exploit.md>), [Linux](<https://devfeed.tech/topics/linux.md>), [Command-line interface](<https://devfeed.tech/topics/cli.md>), [Unix](<https://devfeed.tech/topics/unix.md>), [backups](<https://devfeed.tech/topics/backups.md>)

Tags: [backups](<https://devfeed.tech/tags/backups.md>), [buffer-overflow](<https://devfeed.tech/tags/buffer-overflow.md>), [centos](<https://devfeed.tech/tags/centos.md>), [client](<https://devfeed.tech/tags/client.md>), [command-line](<https://devfeed.tech/tags/command-line.md>), [debian-linux](<https://devfeed.tech/tags/debian-linux.md>), [exploit](<https://devfeed.tech/tags/exploit.md>), [freebsd](<https://devfeed.tech/tags/freebsd.md>), [linux](<https://devfeed.tech/tags/linux.md>), [linux-news](<https://devfeed.tech/tags/linux-news.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [race-condition](<https://devfeed.tech/tags/race-condition.md>), [rsync](<https://devfeed.tech/tags/rsync.md>), [security](<https://devfeed.tech/tags/security.md>), [server](<https://devfeed.tech/tags/server.md>), [sysadmin](<https://devfeed.tech/tags/sysadmin.md>), [unix](<https://devfeed.tech/tags/unix.md>), [vulnerability](<https://devfeed.tech/tags/vulnerability.md>)

### AI overview

Rsync versions 3.3.0 and earlier are affected by multiple security vulnerabilities, including heap-based buffer overflow, information disclosure, symbolic-link race conditions, and path traversal. The document recommends patching rsync on both client and server systems.

### Source excerpt

Rsync is a opensource command-line tool in Linux, macOS, *BSD and Unix-like systems that synchronizes files and directories. It is a popular tool for sending or receiving files, making backups, or setting up mirrors. It minimizes data copied by transferring only the changed parts of files, making it faster and more bandwidth-efficient than traditional copying methods provided by tools like sftp or ftp-ssl. Rsync versions 3.3.0 and below has been found with SIX serious vulnerabilities. Attackers could exploit these to leak your data, corrupt your files, or even take over your system. There is a heap-based buffer overflow with a CVSS score of 9.8 that needs to be addressed on both the client and server sides of rsync package. Apart from that info leak via uninitialized stack contents defeats ASLR protection and rsync server can make client write files outside of destination directory using symbolic links. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post Critical Rsync Vulnerability Requires Immediate Patching on Linux and Unix systems appeared first on nixCraft.

## Linux Copy One Hard Disk to Another Using dd Command

DevFeed: [Linux Copy One Hard Disk to Another Using dd Command](<https://devfeed.tech/articles/linux-copy-one-hard-disk-to-another-using-dd-command-41940.md>)

Original publisher: [Read original article](<https://www.cyberciti.biz/faq/linux-unix-copy-clone-hard-disk/>)

Author: Vivek Gite

Published: 2024-09-09T20:04:33Z

Content type: tutorial

Language: en

Sources: [nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format (RSS/FEED)](<https://devfeed.tech/sources/nixcraft-linux-tips-hacks-tutorials-and-ideas-in-blog-format-rss-feed.md>)

Topics: [Linux](<https://devfeed.tech/topics/linux.md>), [Filesystems](<https://devfeed.tech/topics/filesystems.md>)

Tags: [advanced](<https://devfeed.tech/tags/advanced.md>), [backups](<https://devfeed.tech/tags/backups.md>), [bash-shell](<https://devfeed.tech/tags/bash-shell.md>), [centos](<https://devfeed.tech/tags/centos.md>), [dd-command](<https://devfeed.tech/tags/dd-command.md>), [debian-linux](<https://devfeed.tech/tags/debian-linux.md>), [file-system](<https://devfeed.tech/tags/file-system.md>), [freebsd](<https://devfeed.tech/tags/freebsd.md>), [hard-disk](<https://devfeed.tech/tags/hard-disk.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [hp-ux-unix](<https://devfeed.tech/tags/hp-ux-unix.md>), [linux](<https://devfeed.tech/tags/linux.md>), [openbsd](<https://devfeed.tech/tags/openbsd.md>), [partition-table](<https://devfeed.tech/tags/partition-table.md>), [redhat-and-friends](<https://devfeed.tech/tags/redhat-and-friends.md>), [root-user](<https://devfeed.tech/tags/root-user.md>), [solaris-unix](<https://devfeed.tech/tags/solaris-unix.md>), [suse](<https://devfeed.tech/tags/suse.md>), [ubuntu-linux](<https://devfeed.tech/tags/ubuntu-linux.md>), [unix](<https://devfeed.tech/tags/unix.md>)

### AI overview

A Linux tutorial explains how to clone one hard disk to another with dd, dcfldd, or ddrescue. It covers preparing disks, checking filesystems, and using package managers to install recovery tools.

### Source excerpt

How can I copy one hard disk to another using the dd, ddrescue, or dcfldd commands? Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post Linux Copy One Hard Disk to Another Using dd Command appeared first on nixCraft.

## lnav - Awesome terminal log file viewer for Linux and Unix

DevFeed: [lnav - Awesome terminal log file viewer for Linux and Unix](<https://devfeed.tech/articles/lnav-awesome-terminal-log-file-viewer-for-linux-and-unix-41961.md>)

Original publisher: [Read original article](<https://www.cyberciti.biz/open-source/lnav-linux-unix-ncurses-terminal-log-file-viewer/>)

Author: Vivek Gite

Published: 2024-06-16T11:04:42Z

Content type: tutorial

Language: en

Sources: [nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format (RSS/FEED)](<https://devfeed.tech/sources/nixcraft-linux-tips-hacks-tutorials-and-ideas-in-blog-format-rss-feed.md>)

Topics: [Terminal](<https://devfeed.tech/topics/terminal.md>), [Command-line interface](<https://devfeed.tech/topics/cli.md>), [Linux](<https://devfeed.tech/topics/linux.md>), [Unix](<https://devfeed.tech/topics/unix.md>), [SQLite](<https://devfeed.tech/topics/sqlite.md>), [SQL](<https://devfeed.tech/topics/sql.md>), [Regular expression](<https://devfeed.tech/topics/regular-expression.md>), [ssh](<https://devfeed.tech/topics/ssh.md>), [OpenSSH](<https://devfeed.tech/topics/openssh.md>), [Databases](<https://devfeed.tech/topics/databases.md>)

Tags: [centos](<https://devfeed.tech/tags/centos.md>), [debian-linux](<https://devfeed.tech/tags/debian-linux.md>), [developer](<https://devfeed.tech/tags/developer.md>), [devops](<https://devfeed.tech/tags/devops.md>), [facebook](<https://devfeed.tech/tags/facebook.md>), [filter](<https://devfeed.tech/tags/filter.md>), [freebsd](<https://devfeed.tech/tags/freebsd.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [install](<https://devfeed.tech/tags/install.md>), [linkedin](<https://devfeed.tech/tags/linkedin.md>), [linux](<https://devfeed.tech/tags/linux.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [reddit](<https://devfeed.tech/tags/reddit.md>), [reports](<https://devfeed.tech/tags/reports.md>), [sql](<https://devfeed.tech/tags/sql.md>), [sqlite](<https://devfeed.tech/tags/sqlite.md>), [sysadmin](<https://devfeed.tech/tags/sysadmin.md>), [systems](<https://devfeed.tech/tags/systems.md>), [terminal](<https://devfeed.tech/tags/terminal.md>), [unix](<https://devfeed.tech/tags/unix.md>)

### AI overview

A tutorial on lnav, a terminal-based log viewer for Linux and Unix. It explains how lnav identifies log details, combines files by time, supports colorized error highlighting, regular-expression filtering, SQLite queries, JSON formatting, remote access, and installation across several operating systems.

### Source excerpt

It is no secret that whether you are a developer or sysadmin, you need to use log files to troubleshoot errors on your Linux and Unix systems. You use tools like grep, tail, cat, or journalctl to view log files. However, you may need help with so many log files. These essential Unix tools are suitable for basic text but fall short when dealing with many log files. You can get tired from sifting through endless lines of log files. The lnav utility is here to the rescue! It is a powerful log file viewer that goes beyond the basics. It understands your logs by identifying timestamps, log levels, and other vital details. You can run SQLite SQL queries against your standard log files and build reports for your needs. Let us see how to install and use the lnav tool quickly. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post lnav - Awesome terminal log file viewer for Linux and Unix appeared first on nixCraft.

## TCPDump: Capture and Record Specific Protocols / Port Traffic

DevFeed: [TCPDump: Capture and Record Specific Protocols / Port Traffic](<https://devfeed.tech/articles/tcpdump-capture-and-record-specific-protocols-port-traffic-41952.md>)

Original publisher: [Read original article](<https://www.cyberciti.biz/faq/tcpdump-capture-record-protocols-port/>)

Author: Vivek Gite

Published: 2024-05-17T21:00:03Z

Content type: tutorial

Language: en

Sources: [nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format (RSS/FEED)](<https://devfeed.tech/sources/nixcraft-linux-tips-hacks-tutorials-and-ideas-in-blog-format-rss-feed.md>)

Topics: [Linux](<https://devfeed.tech/topics/linux.md>), [Network](<https://devfeed.tech/topics/network.md>), [Unix](<https://devfeed.tech/topics/unix.md>), [Monitoring](<https://devfeed.tech/topics/monitoring.md>), [debug](<https://devfeed.tech/topics/debug.md>), [Protocol (disambiguation)](<https://devfeed.tech/topics/protocol.md>)

Tags: [advanced](<https://devfeed.tech/tags/advanced.md>), [aix](<https://devfeed.tech/tags/aix.md>), [bash-shell](<https://devfeed.tech/tags/bash-shell.md>), [centos](<https://devfeed.tech/tags/centos.md>), [debian-linux](<https://devfeed.tech/tags/debian-linux.md>), [debugging](<https://devfeed.tech/tags/debugging.md>), [freebsd](<https://devfeed.tech/tags/freebsd.md>), [http](<https://devfeed.tech/tags/http.md>), [iptables](<https://devfeed.tech/tags/iptables.md>), [linux](<https://devfeed.tech/tags/linux.md>), [monitoring](<https://devfeed.tech/tags/monitoring.md>), [network](<https://devfeed.tech/tags/network.md>), [network-interface](<https://devfeed.tech/tags/network-interface.md>), [protocol](<https://devfeed.tech/tags/protocol.md>), [redhat-and-friends](<https://devfeed.tech/tags/redhat-and-friends.md>), [security](<https://devfeed.tech/tags/security.md>), [tcpdump-command](<https://devfeed.tech/tags/tcpdump-command.md>), [tool](<https://devfeed.tech/tags/tool.md>), [troubleshooting](<https://devfeed.tech/tags/troubleshooting.md>), [ubuntu-linux](<https://devfeed.tech/tags/ubuntu-linux.md>), [unix](<https://devfeed.tech/tags/unix.md>)

### AI overview

A practical guide to using TCPDump on Linux, Unix, and BSD systems to capture and record network traffic by interface, protocol, port, host, and network. It also covers saving packet captures and inspecting TCP and UDP traffic.

### Source excerpt

How do I capture a specific protocol or port, such as 80 (HTTP) or 443 (HTTPS), using the TCPDump tool under Linux/UNIX? How do I record traffic with TCPDump and find problems later on with my network or server issues? Let's dive into the nitty-gritty of capturing and analyzing your network traffic for trapshooting network and server issues. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post TCPDump: Capture and Record Specific Protocols / Port Traffic appeared first on nixCraft.

## How to find ulimit for user on Linux

DevFeed: [How to find ulimit for user on Linux](<https://devfeed.tech/articles/how-to-find-ulimit-for-user-on-linux-41920.md>)

Original publisher: [Read original article](<https://www.cyberciti.biz/faq/how-to-find-ulimit-for-user-on-linux/>)

Author: Vivek Gite

Published: 2024-05-16T21:57:31Z

Content type: tutorial

Language: en

Sources: [nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format (RSS/FEED)](<https://devfeed.tech/sources/nixcraft-linux-tips-hacks-tutorials-and-ideas-in-blog-format-rss-feed.md>)

Topics: [Linux](<https://devfeed.tech/topics/linux.md>), [Processes](<https://devfeed.tech/topics/processes.md>), [systems](<https://devfeed.tech/topics/systems.md>)

Tags: [account](<https://devfeed.tech/tags/account.md>), [bash-shell](<https://devfeed.tech/tags/bash-shell.md>), [centos](<https://devfeed.tech/tags/centos.md>), [command](<https://devfeed.tech/tags/command.md>), [debian](<https://devfeed.tech/tags/debian.md>), [debian-linux](<https://devfeed.tech/tags/debian-linux.md>), [developers](<https://devfeed.tech/tags/developers.md>), [easy](<https://devfeed.tech/tags/easy.md>), [file](<https://devfeed.tech/tags/file.md>), [firefox](<https://devfeed.tech/tags/firefox.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [limits](<https://devfeed.tech/tags/limits.md>), [linux](<https://devfeed.tech/tags/linux.md>), [nginx](<https://devfeed.tech/tags/nginx.md>), [php](<https://devfeed.tech/tags/php.md>), [process](<https://devfeed.tech/tags/process.md>), [python](<https://devfeed.tech/tags/python.md>), [red-hat-enterprise](<https://devfeed.tech/tags/red-hat-enterprise.md>), [redhat-and-friends](<https://devfeed.tech/tags/redhat-and-friends.md>), [rhel](<https://devfeed.tech/tags/rhel.md>), [suse](<https://devfeed.tech/tags/suse.md>), [sysadmin](<https://devfeed.tech/tags/sysadmin.md>), [ulimit](<https://devfeed.tech/tags/ulimit.md>), [unix-linux](<https://devfeed.tech/tags/unix-linux.md>), [user](<https://devfeed.tech/tags/user.md>)

### AI overview

A Linux tutorial explaining how to inspect ulimit resource limits for user accounts and running processes. It covers soft and hard limits, relevant configuration sources, and finding limits for services such as nginx.

### Source excerpt

How can I find the correct ulimit values for a user account or process on Linux systems? Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to find ulimit for user on Linux appeared first on nixCraft.

## How to copy permissions from one file to another on Linux

DevFeed: [How to copy permissions from one file to another on Linux](<https://devfeed.tech/articles/how-to-copy-permissions-from-one-file-to-another-on-linux-41919.md>)

Original publisher: [Read original article](<https://www.cyberciti.biz/faq/how-to-copy-permissions-from-one-file-to-another-on-linux/>)

Author: Vivek Gite

Published: 2024-05-08T22:06:06Z

Content type: tutorial

Language: en

Sources: [nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format (RSS/FEED)](<https://devfeed.tech/sources/nixcraft-linux-tips-hacks-tutorials-and-ideas-in-blog-format-rss-feed.md>)

Topics: [Linux](<https://devfeed.tech/topics/linux.md>), [chmod](<https://devfeed.tech/topics/chmod.md>), [Access Control](<https://devfeed.tech/topics/access-control.md>), [Command-line interface](<https://devfeed.tech/topics/cli.md>)

Tags: [access-control](<https://devfeed.tech/tags/access-control.md>), [bash-shell](<https://devfeed.tech/tags/bash-shell.md>), [centos](<https://devfeed.tech/tags/centos.md>), [chmod](<https://devfeed.tech/tags/chmod.md>), [chmod-command](<https://devfeed.tech/tags/chmod-command.md>), [chown-command](<https://devfeed.tech/tags/chown-command.md>), [command](<https://devfeed.tech/tags/command.md>), [command-line](<https://devfeed.tech/tags/command-line.md>), [debian-linux](<https://devfeed.tech/tags/debian-linux.md>), [easy](<https://devfeed.tech/tags/easy.md>), [files](<https://devfeed.tech/tags/files.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [linux](<https://devfeed.tech/tags/linux.md>), [permissions](<https://devfeed.tech/tags/permissions.md>), [redhat-and-friends](<https://devfeed.tech/tags/redhat-and-friends.md>), [suse](<https://devfeed.tech/tags/suse.md>)

### AI overview

A Linux tutorial explains how to copy file permissions and ownership from one file or directory to another using chmod with --reference and chown. It also covers copying access control lists with getfacl and setfacl.

### Source excerpt

I need to copy or clone file ownership and permissions from another file on Linux. Is there a bash command line option to clone the user, group ownership and permissions on a file from another file on Linux operating system? Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to copy permissions from one file to another on Linux appeared first on nixCraft.

## How to Pin Versions in Yum or Dnf for RHEL or CentOS Linux

DevFeed: [How to Pin Versions in Yum or Dnf for RHEL or CentOS Linux](<https://devfeed.tech/articles/how-to-pin-versions-in-yum-or-dnf-for-rhel-or-centos-linux-41968.md>)

Original publisher: [Read original article](<https://www.cyberciti.biz/tips/yum-dnf-pin-package-versions-on-rhel-centos-rocky-oracle-almalinux.html>)

Author: Vivek Gite

Published: 2024-05-07T09:01:47Z

Content type: tutorial

Language: en

Sources: [nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format (RSS/FEED)](<https://devfeed.tech/sources/nixcraft-linux-tips-hacks-tutorials-and-ideas-in-blog-format-rss-feed.md>)

Topics: [dnf](<https://devfeed.tech/topics/dnf.md>), [Linux](<https://devfeed.tech/topics/linux.md>), [centos](<https://devfeed.tech/topics/centos.md>), [rhel](<https://devfeed.tech/topics/rhel.md>), [Fedora](<https://devfeed.tech/topics/fedora.md>)

Tags: [centos](<https://devfeed.tech/tags/centos.md>), [dnf](<https://devfeed.tech/tags/dnf.md>), [fedora](<https://devfeed.tech/tags/fedora.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [howto](<https://devfeed.tech/tags/howto.md>), [linux](<https://devfeed.tech/tags/linux.md>), [linux-distribution](<https://devfeed.tech/tags/linux-distribution.md>), [pin](<https://devfeed.tech/tags/pin.md>), [redhat-fedora-linux](<https://devfeed.tech/tags/redhat-fedora-linux.md>), [rhel](<https://devfeed.tech/tags/rhel.md>), [sys-admin](<https://devfeed.tech/tags/sys-admin.md>), [tips](<https://devfeed.tech/tags/tips.md>)

### AI overview

A tutorial explains how to pin packages to specific versions on RHEL, CentOS, Fedora, and related distributions using yum or dnf. It covers installing the versionlock plugin, locking packages such as PHP and nginx, listing or removing locks, and checking blocked updates.

### Source excerpt

CentOS, RHEL (Red Hat Enterprise Linux), Fedora and other clones of RHEL, such as Oracle, Alma, and Rocky, offer support for version pinning. This feature allows developers and system administrators to lock a particular package to a specific version, preventing it from being automatically updated by yum or dnf commands. Sometimes, it is necessary to protect packages from being updated to newer versions to avoid incompatibility issues with your applications. For example, you can lock down PHP version 8.3.6 and avoid using updated PHP version 8.4. Let us see how to lock a package to a specific version, only exclude a package from yum update or dnf update on a CentOS, RHEL, Fedora, and friends. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to Pin Versions in Yum or Dnf for RHEL or CentOS Linux appeared first on nixCraft.

## How old are Official Docker images? 2024 Edition

DevFeed: [How old are Official Docker images? 2024 Edition](<https://devfeed.tech/articles/how-old-are-official-docker-images-2024-edition-27702.md>)

Original publisher: [Read original article](<https://gagor.pro/2024/03/how-old-are-official-docker-images-2024-edition/>)

Author: Tom

Published: 2024-03-24T00:00:00Z

Content type: article

Language: en

Sources: [Tomasz Gągor](<https://devfeed.tech/sources/tomasz-gagor.md>)

Topics: [Docker](<https://devfeed.tech/topics/docker.md>), [docker images](<https://devfeed.tech/topics/docker-images.md>), [Docker Hub](<https://devfeed.tech/topics/docker-hub.md>), [centos](<https://devfeed.tech/topics/centos.md>), [Debian](<https://devfeed.tech/topics/debian.md>), [Ubuntu](<https://devfeed.tech/topics/ubuntu.md>), [openjdk](<https://devfeed.tech/topics/openjdk.md>), [Bash](<https://devfeed.tech/topics/bash.md>), [Script](<https://devfeed.tech/topics/script.md>), [deprecated](<https://devfeed.tech/topics/deprecated.md>)

Tags: [bash](<https://devfeed.tech/tags/bash.md>), [centos](<https://devfeed.tech/tags/centos.md>), [centos-docker-image](<https://devfeed.tech/tags/centos-docker-image.md>), [debian](<https://devfeed.tech/tags/debian.md>), [debian-docker-image](<https://devfeed.tech/tags/debian-docker-image.md>), [deprecated](<https://devfeed.tech/tags/deprecated.md>), [docker](<https://devfeed.tech/tags/docker.md>), [docker-hub](<https://devfeed.tech/tags/docker-hub.md>), [docker-image-age](<https://devfeed.tech/tags/docker-image-age.md>), [docker-image-updates](<https://devfeed.tech/tags/docker-image-updates.md>), [docker-images](<https://devfeed.tech/tags/docker-images.md>), [dockerfiles](<https://devfeed.tech/tags/dockerfiles.md>), [eclipse](<https://devfeed.tech/tags/eclipse.md>), [end-of-life](<https://devfeed.tech/tags/end-of-life.md>), [images](<https://devfeed.tech/tags/images.md>), [official-docker-images](<https://devfeed.tech/tags/official-docker-images.md>), [openjdk](<https://devfeed.tech/tags/openjdk.md>), [script](<https://devfeed.tech/tags/script.md>), [ubuntu](<https://devfeed.tech/tags/ubuntu.md>), [ubuntu-docker-image](<https://devfeed.tech/tags/ubuntu-docker-image.md>)

### AI overview

An analysis of the age and update status of official Docker images in 2024. It reports that modern OS images are generally reasonably current, while CentOS and OpenJDK images have reached important lifecycle or maintenance milestones.

### Source excerpt

Discover the current age and update status of various official Docker images, including CentOS, Ubuntu, and Debian, in the 2024 edition of this analysis.

## Official CentOS 8 Stream Docker Image Is Available on quay.io

DevFeed: [Official CentOS 8 Stream Docker Image Is Available on quay.io](<https://devfeed.tech/articles/official-centos-8-stream-docker-image-finally-available-27665.md>)

Original publisher: [Read original article](<https://gagor.pro/2021/07/official-centos-8-stream-docker-image-finally-available/>)

Author: Tom

Published: 2021-07-25T00:00:00Z

Content type: opinion

Language: en

Sources: [Tomasz Gągor](<https://devfeed.tech/sources/tomasz-gagor.md>)

Topics: [Docker Image](<https://devfeed.tech/topics/docker-image.md>), [centos](<https://devfeed.tech/topics/centos.md>), [Docker](<https://devfeed.tech/topics/docker.md>)

Tags: [base-images](<https://devfeed.tech/tags/base-images.md>), [centos](<https://devfeed.tech/tags/centos.md>), [centos-8-stream-docker-image](<https://devfeed.tech/tags/centos-8-stream-docker-image.md>), [centos-docker-image-updates](<https://devfeed.tech/tags/centos-docker-image-updates.md>), [centos-stream](<https://devfeed.tech/tags/centos-stream.md>), [centos-stream-9](<https://devfeed.tech/tags/centos-stream-9.md>), [docker](<https://devfeed.tech/tags/docker.md>), [docker-hub](<https://devfeed.tech/tags/docker-hub.md>), [docker-hub-to-quay-io-transition](<https://devfeed.tech/tags/docker-hub-to-quay-io-transition.md>), [docker-image](<https://devfeed.tech/tags/docker-image.md>), [docker-image-management](<https://devfeed.tech/tags/docker-image-management.md>), [end-of-life](<https://devfeed.tech/tags/end-of-life.md>), [eol](<https://devfeed.tech/tags/eol.md>), [official-docker-images](<https://devfeed.tech/tags/official-docker-images.md>), [upgrade](<https://devfeed.tech/tags/upgrade.md>)

### AI overview

The article discusses the availability of an official CentOS 8 Stream Docker image on quay.io after its transition from Docker Hub. It also notes the lack of updates for older images and recommends considering CentOS Stream 9 as CentOS Stream 8 approaches archival.

### Source excerpt

Discover the availability of the official CentOS 8 Stream Docker image on quay.io, and learn about the transition from Docker Hub and its implications.

## CentOS 8 Stream Docker image

DevFeed: [CentOS 8 Stream Docker image](<https://devfeed.tech/articles/centos-8-stream-docker-image-27661.md>)

Original publisher: [Read original article](<https://gagor.pro/2021/02/centos-8-stream-docker-image/>)

Author: Tom

Published: 2021-02-11T00:00:00Z

Content type: tutorial

Language: en

Sources: [Tomasz Gągor](<https://devfeed.tech/sources/tomasz-gagor.md>)

Topics: [Docker Image](<https://devfeed.tech/topics/docker-image.md>), [centos](<https://devfeed.tech/topics/centos.md>), [Docker](<https://devfeed.tech/topics/docker.md>), [Optimization](<https://devfeed.tech/topics/optimization.md>), [Docker Hub](<https://devfeed.tech/topics/docker-hub.md>)

Tags: [centos](<https://devfeed.tech/tags/centos.md>), [centos-8-stream-docker-image](<https://devfeed.tech/tags/centos-8-stream-docker-image.md>), [centos-docker-setup](<https://devfeed.tech/tags/centos-docker-setup.md>), [centos-stream](<https://devfeed.tech/tags/centos-stream.md>), [docker](<https://devfeed.tech/tags/docker.md>), [docker-container-management](<https://devfeed.tech/tags/docker-container-management.md>), [docker-hub](<https://devfeed.tech/tags/docker-hub.md>), [docker-image](<https://devfeed.tech/tags/docker-image.md>), [docker-image-optimization](<https://devfeed.tech/tags/docker-image-optimization.md>), [docker-image-squashing](<https://devfeed.tech/tags/docker-image-squashing.md>), [hooks](<https://devfeed.tech/tags/hooks.md>), [optimization](<https://devfeed.tech/tags/optimization.md>)

### AI overview

The article describes creating a CentOS 8 Stream Docker image because no official Stream variant was available. It explains squashing image layers to reduce size and using Docker Hub hooks to automate builds and provide a squashed image from the registry.

### Source excerpt

Learn about the creation and optimization of a CentOS 8 Stream Docker image, including steps to squash the image and ensure it is suitable for production workloads.

## CentOS8 images published in Pouta as a tech preview

DevFeed: [CentOS8 images published in Pouta as a tech preview](<https://devfeed.tech/articles/centos8-images-published-in-pouta-as-a-tech-preview-19773.md>)

Original publisher: [Read original article](<https://cloud.blog.csc.fi/2020/02/centos8-images-published-in-pouta-as.html>)

Author: Unknown (noreply@blogger.com)

Published: 2020-02-17T05:48:00Z

Content type: release

Language: en

Sources: [CSC - IT Center For Science - Cloud Team](<https://devfeed.tech/sources/csc-it-center-for-science-cloud-team.md>)

Topics: [Cloud](<https://devfeed.tech/topics/cloud.md>)

Tags: [centos](<https://devfeed.tech/tags/centos.md>), [centos8](<https://devfeed.tech/tags/centos8.md>), [cloud-data](<https://devfeed.tech/tags/cloud-data.md>), [diskimage](<https://devfeed.tech/tags/diskimage.md>), [glance](<https://devfeed.tech/tags/glance.md>), [image](<https://devfeed.tech/tags/image.md>), [openstack](<https://devfeed.tech/tags/openstack.md>), [pouta](<https://devfeed.tech/tags/pouta.md>), [preview](<https://devfeed.tech/tags/preview.md>), [published](<https://devfeed.tech/tags/published.md>), [tech](<https://devfeed.tech/tags/tech.md>), [ubuntu](<https://devfeed.tech/tags/ubuntu.md>)

### AI overview

CentOS 8 images are available in Pouta as a tech preview. The article notes minor upstream issues, including a resolv.conf nameserver issue, and describes temporary image modifications to address one issue.

### Source excerpt

There are now CentOS-8 images available in Pouta! There are some minor issues with the upstream CentOS8 images, so, for now, they are considered to be in "tech preview". We have solved the one we have found so far by temporarily modifying the image to use "cloud-user" and remove the resolv.conf leftovers. Basic information about our images can be found on docs.csc.fi One issue is that /etc/resolv.conf sometimes has a nameserver defined from the build of the image. There is an open CentOS bug report about this: https://bugs.centos.org/view.php?id=16948

## Linux Observability with BPF

DevFeed: [Linux Observability with BPF](<https://devfeed.tech/articles/linux-observability-with-bpf-35178.md>)

Original publisher: [Read original article](<https://blog.jessfraz.com/post/linux-observability-with-bpf/>)

Published: 2019-07-10T15:25:24Z

Content type: opinion

Language: en

Sources: [Jessie Frazelle](<https://devfeed.tech/sources/jessie-frazelle.md>)

Topics: [Linux](<https://devfeed.tech/topics/linux.md>), [observability](<https://devfeed.tech/topics/observability.md>), [Kernel](<https://devfeed.tech/topics/kernel.md>), [Docker](<https://devfeed.tech/topics/docker.md>), [Cilium](<https://devfeed.tech/topics/cilium.md>), [networking](<https://devfeed.tech/topics/networking.md>)

Tags: [bug](<https://devfeed.tech/tags/bug.md>), [centos](<https://devfeed.tech/tags/centos.md>), [cilium](<https://devfeed.tech/tags/cilium.md>), [docker](<https://devfeed.tech/tags/docker.md>), [kernel](<https://devfeed.tech/tags/kernel.md>), [linux](<https://devfeed.tech/tags/linux.md>), [networking](<https://devfeed.tech/tags/networking.md>), [observability](<https://devfeed.tech/tags/observability.md>)

### AI overview

A foreword for the book Linux Observability with BPF explains the author's interest in BPF and XDP, including their use for Linux kernel tracing, container networking, and replacing some iptables-based functionality. It also discusses Docker's iptables-related challenges and mentions Cilium, Cloudflare, and Facebook use cases.

### Source excerpt

Below is the foreward for the new book on Linux Observability with BPF by two of my favorite programmers, David Calavera and Lorenzo Fontana! I was pretty stoked about getting to write the foreward, I asked O'Reilly if I could publish it on my blog as well and they said yes. I hope you all check out this book and share what you've built after! As a programmer (and a self confessed dweeb) I like to stay up to date on the latest additions to various kernels and research in computing. When I first played around with Berkeley Packet Filters (BPF) and Express Data Path (XDP) in Linux I was in love. This is such a NICE THING and I am glad this book is putting BPF and XDP on the center stage so more people can start using it in their projects. Let me go into detail about my background and why I fell in love with these kernel interfaces... I worked as a Docker core maintainer, along with David (one of the brilliant authors of this book). Docker, if you are not familiar, shells out to iptables for a lot of the filtering and routing logic for containers. The first patch I ever made to Docker was fixing a problem where a version of iptables on CentOS didn't have the same command-line flags so writing to iptables was failing. There were a lot of weird issues like this and anyone who has ever shelled out to a tool in their software can likely commiserate. Not only that, having thousands of rules on a host is not what iptables was built for and has performance side effects because of it. Then I heard about BPF and XDP. This was like music to my ears. No longer would my scars from iptables bleed with another bug! The kernel community is even working on replacing iptables with BPF! Halleluyah! Cilium, container networking, is using BPF and XDP for the internals of their project as well. But that's not all! BPF can do so much more than just fulfilling the iptables use case. With BPF, you can trace any syscall or kernel function as well as any user-space program. bpftrace gives users d

## Building a Home Server

DevFeed: [Building a Home Server](<https://devfeed.tech/articles/building-a-home-server-41479.md>)

Original publisher: [Read original article](<https://chollinger.com/blog/2019/04/building-a-home-server/>)

Author: Christian Hollinger

Published: 2019-04-11T00:00:00Z

Content type: article

Language: en

Sources: [Christian Hollinger](<https://devfeed.tech/sources/christian-hollinger.md>)

Topics: [Homelab](<https://devfeed.tech/topics/homelab.md>), [backups](<https://devfeed.tech/topics/backups.md>), [Computing](<https://devfeed.tech/topics/computing.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [Pi-hole](<https://devfeed.tech/topics/pihole.md>), [Monitoring](<https://devfeed.tech/topics/monitoring.md>), [Internet](<https://devfeed.tech/topics/internet.md>), [cpu](<https://devfeed.tech/topics/cpu.md>), [Virtual Private Network](<https://devfeed.tech/topics/vpn.md>), [Amazon S3](<https://devfeed.tech/topics/amazon-s3.md>), [DDR4](<https://devfeed.tech/topics/ddr4.md>), [Git](<https://devfeed.tech/topics/git.md>)

Tags: [article](<https://devfeed.tech/tags/article.md>), [aws-s3](<https://devfeed.tech/tags/aws-s3.md>), [backups](<https://devfeed.tech/tags/backups.md>), [bash](<https://devfeed.tech/tags/bash.md>), [big-data](<https://devfeed.tech/tags/big-data.md>), [centos](<https://devfeed.tech/tags/centos.md>), [computing](<https://devfeed.tech/tags/computing.md>), [debian](<https://devfeed.tech/tags/debian.md>), [encryption](<https://devfeed.tech/tags/encryption.md>), [git](<https://devfeed.tech/tags/git.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [headless](<https://devfeed.tech/tags/headless.md>), [home-server](<https://devfeed.tech/tags/home-server.md>), [linux](<https://devfeed.tech/tags/linux.md>), [luks](<https://devfeed.tech/tags/luks.md>), [nas](<https://devfeed.tech/tags/nas.md>), [networking](<https://devfeed.tech/tags/networking.md>), [privacy](<https://devfeed.tech/tags/privacy.md>), [security](<https://devfeed.tech/tags/security.md>), [server](<https://devfeed.tech/tags/server.md>), [smb](<https://devfeed.tech/tags/smb.md>), [storage](<https://devfeed.tech/tags/storage.md>), [sysadmin](<https://devfeed.tech/tags/sysadmin.md>), [windows](<https://devfeed.tech/tags/windows.md>)

### AI overview

A practical account of building a home server or NAS for local storage, SMB drives, backups, processing, Git repositories, CD rips, and other headless computing. It discusses privacy, cloud-storage limitations, local services, and the hardware used.

### Source excerpt

In this article, I'll document my process of building a home server - or NAS - for local storage, smb drives, backups, processing, git, CD-rips, and other headless computing...

## Installing minikube on CentOS

DevFeed: [Installing minikube on CentOS](<https://devfeed.tech/articles/installing-minikube-on-centos-17503.md>)

Original publisher: [Read original article](<https://www.nocentino.com/posts/2018-10-13-installing-minikube-on-centos/>)

Author: Anthony Nocentino

Published: 2018-10-13T11:02:33Z

Content type: tutorial

Language: en

Sources: [Kubernetes on Anthony Nocentino's Blog](<https://devfeed.tech/sources/kubernetes-on-anthony-nocentino-s-blog.md>)

Topics: [Kubernetes](<https://devfeed.tech/topics/kubernetes.md>), [Linux](<https://devfeed.tech/topics/linux.md>), [virtualization](<https://devfeed.tech/topics/virtualization.md>), [Command-line interface](<https://devfeed.tech/topics/cli.md>)

Tags: [blog-post](<https://devfeed.tech/tags/blog-post.md>), [centos](<https://devfeed.tech/tags/centos.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [install](<https://devfeed.tech/tags/install.md>), [kubernetes](<https://devfeed.tech/tags/kubernetes.md>), [kvm](<https://devfeed.tech/tags/kvm.md>), [linux](<https://devfeed.tech/tags/linux.md>), [ssh](<https://devfeed.tech/tags/ssh.md>), [training](<https://devfeed.tech/tags/training.md>), [virtualization](<https://devfeed.tech/tags/virtualization.md>)

### AI overview

A tutorial for installing Minikube on CentOS 7 in a virtual machine. It covers enabling nested virtualization, installing KVM and the KVM2 driver, installing the Kubernetes client and Minikube, and starting a local Kubernetes v1.10.0 cluster.

### Source excerpt

In this blog post, I'll show you how to install Minikube on CentOS. Minikube is a platform you can use to test kubernetes clusters on your local machine or in a virtual machine. Let's start off with a fresh Install of CentoOS 7 on a virtual machine using a minimal install. If you need some help getting a Linux VM us, check out my Pluralsight course here to help you with that. You will want to ensure this virtual machine has the resource you want to run the container/pods scenarios you'd like to worth with. My configuration is dual vCPU with 10GB of RAM.

## amcheck for Postgres 9.4+ now available from PGDG apt and yum repositories

DevFeed: [amcheck for Postgres 9.4+ now available from PGDG apt and yum repositories](<https://devfeed.tech/articles/amcheck-for-postgres-9-4-now-available-from-pgdg-apt-and-yum-repositories-33656.md>)

Original publisher: [Read original article](<https://pgeoghegan.blogspot.com/2017/10/amcheck-for-postgres-94-now-available.html>)

Author: Peter Geoghegan (noreply@blogger.com)

Published: 2017-10-16T01:44:00Z

Content type: release

Language: en

Sources: [Peter Geoghegan's blog](<https://devfeed.tech/sources/peter-geoghegan-s-blog.md>)

Topics: [PostgreSQL](<https://devfeed.tech/topics/postgresql.md>), [Tool](<https://devfeed.tech/topics/tool.md>)

Tags: [amcheck](<https://devfeed.tech/tags/amcheck.md>), [apt](<https://devfeed.tech/tags/apt.md>), [centos](<https://devfeed.tech/tags/centos.md>), [debian](<https://devfeed.tech/tags/debian.md>), [index](<https://devfeed.tech/tags/index.md>), [internals](<https://devfeed.tech/tags/internals.md>), [nbtree](<https://devfeed.tech/tags/nbtree.md>), [postgres](<https://devfeed.tech/tags/postgres.md>), [postgresql](<https://devfeed.tech/tags/postgresql.md>), [redhat](<https://devfeed.tech/tags/redhat.md>), [release](<https://devfeed.tech/tags/release.md>), [repositories](<https://devfeed.tech/tags/repositories.md>), [ubuntu](<https://devfeed.tech/tags/ubuntu.md>)

### AI overview

The amcheck tool for detecting PostgreSQL index corruption is now packaged for installation from community Debian/Ubuntu apt repositories and Red Hat/CentOS/SLES yum repositories. These packages support PostgreSQL versions before 10 and install as amcheck_next on PostgreSQL 10. A future enhancement is planned for heap-matches-index verification.

### Source excerpt

amcheck, a tool for index corruption detection, now has packages available from the community Debian/Ubuntu apt repository, as well as packages from the community Redhat/CentOS/SLES yum repository. This means that installations built on those community resources can easily install amcheck, even on PostgreSQL versions before PostgreSQL 10, the release that contrib/amcheck actually first appears in. Full details on installing these packages are available from the README: https://github.com/petergeoghegan/amcheck/ It's also possible to install the packages on PostgreSQL 10, because the extension these packages install is actually named "amcheck_next" (not "amcheck"). Currently, it isn't really useful to install "amcheck_next" on PostgreSQL 10, because its functionality is identical to contrib/amcheck. That's expected to change soon, though. I will add a new enhancement to amcheck_next in the coming weeks, allowing verification functions to perform "heap matches index" verification on top of what is already possible. Many thanks to Christoph Berg and Devrim Gündüz for their help with the packaging.

## How to install Node.js 6.x Long-Term Support (LTS) on Ubuntu/Debian and CentOS

DevFeed: [How to install Node.js 6.x Long-Term Support (LTS) on Ubuntu/Debian and CentOS](<https://devfeed.tech/articles/how-to-install-node-js-6-x-long-term-support-lts-on-ubuntu-debian-and-centos-31841.md>)

Original publisher: [Read original article](<https://www.metachris.dev/2017/01/how-to-install-nodejs-6-lts-on-ubuntu-and-centos/>)

Author: Chris Hager

Published: 2017-01-12T00:00:00Z

Content type: tutorial

Language: en

Sources: [Chris Hager](<https://devfeed.tech/sources/chris-hager.md>)

Topics: [Node.js](<https://devfeed.tech/topics/node-js.md>), [Package manager](<https://devfeed.tech/topics/package-manager.md>), [centos](<https://devfeed.tech/topics/centos.md>), [Debian](<https://devfeed.tech/topics/debian.md>), [Ubuntu](<https://devfeed.tech/topics/ubuntu.md>), [apt](<https://devfeed.tech/topics/apt.md>), [npm](<https://devfeed.tech/topics/npm.md>)

Tags: [apt](<https://devfeed.tech/tags/apt.md>), [centos](<https://devfeed.tech/tags/centos.md>), [debian](<https://devfeed.tech/tags/debian.md>), [guide](<https://devfeed.tech/tags/guide.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [install](<https://devfeed.tech/tags/install.md>), [linux](<https://devfeed.tech/tags/linux.md>), [lts](<https://devfeed.tech/tags/lts.md>), [node](<https://devfeed.tech/tags/node.md>), [node-js](<https://devfeed.tech/tags/node-js.md>), [npm](<https://devfeed.tech/tags/npm.md>), [ubuntu](<https://devfeed.tech/tags/ubuntu.md>)

### AI overview

A tutorial for installing Node.js 6.x LTS, including npm, on Ubuntu, Debian, and CentOS. It recommends using the system package manager and distribution-specific setup scripts so installations can continue receiving security updates without unintended major-version changes.

### Source excerpt

Node.js 6.x is the current Node.js long-term support (LTS) release, with Node.js v6.9.4 being the most recent release as of time of writing. This guide shows a quick and reliable way to install the current Node.js 6.x LTS version (including npm) on Ubuntu/Debian and CentOS. console.log("Hello World"); We will use the system package manager (eg. apt or yum) to install Node.js 6.x, to be able to continually receive security updates without risking a major version jump with possibly breaking changes.

## How to install Node.js 7.x on Ubuntu/Debian and CentOS

DevFeed: [How to install Node.js 7.x on Ubuntu/Debian and CentOS](<https://devfeed.tech/articles/how-to-install-node-js-7-x-on-ubuntu-debian-and-centos-31842.md>)

Original publisher: [Read original article](<https://www.metachris.dev/2017/01/how-to-install-nodejs-7-on-ubuntu-and-centos/>)

Author: Chris Hager

Published: 2017-01-12T00:00:00Z

Content type: tutorial

Language: en

Sources: [Chris Hager](<https://devfeed.tech/sources/chris-hager.md>)

Topics: [Node.js](<https://devfeed.tech/topics/node-js.md>), [centos](<https://devfeed.tech/topics/centos.md>), [Debian](<https://devfeed.tech/topics/debian.md>), [Ubuntu](<https://devfeed.tech/topics/ubuntu.md>), [npm](<https://devfeed.tech/topics/npm.md>), [Package manager](<https://devfeed.tech/topics/package-manager.md>)

Tags: [centos](<https://devfeed.tech/tags/centos.md>), [debian](<https://devfeed.tech/tags/debian.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [install](<https://devfeed.tech/tags/install.md>), [js](<https://devfeed.tech/tags/js.md>), [lts](<https://devfeed.tech/tags/lts.md>), [node](<https://devfeed.tech/tags/node.md>), [node-js](<https://devfeed.tech/tags/node-js.md>), [npm](<https://devfeed.tech/tags/npm.md>), [security](<https://devfeed.tech/tags/security.md>), [stable](<https://devfeed.tech/tags/stable.md>), [ubuntu](<https://devfeed.tech/tags/ubuntu.md>), [version](<https://devfeed.tech/tags/version.md>)

### AI overview

A guide to installing Node.js 7.x, including npm, on Ubuntu, Debian, Linux Mint, elementaryOS, and CentOS-based distributions. It describes using setup scripts and system package repositories to receive updates while avoiding major version jumps.

### Source excerpt

Node.js 7.x is the current stable release of the Node.js, which is actively maintained in parallel to Node.js 6.x Long-Term Support (LTS). At the moment, the latest version is Node.js v7.4.0, and you can find the Node.js v7.x Changelog here on Github. This guide shows a quick and reliable way to install the current Node.js 7.x version (including npm) on Ubuntu/Debian and CentOS, using the system package manager, in order to continually receive security updates without risking a major version jump with possibly breaking changes.

## How to install Node.js 5.x on CentOS and Ubuntu/Debian

DevFeed: [How to install Node.js 5.x on CentOS and Ubuntu/Debian](<https://devfeed.tech/articles/how-to-install-node-js-5-x-on-centos-and-ubuntu-debian-31825.md>)

Original publisher: [Read original article](<https://www.metachris.dev/2015/10/how-to-install-nodejs-5-on-centos-and-ubuntu/>)

Author: Chris Hager

Published: 2015-10-30T00:00:00Z

Content type: tutorial

Language: en

Sources: [Chris Hager](<https://devfeed.tech/sources/chris-hager.md>)

Topics: [Node.js](<https://devfeed.tech/topics/node-js.md>), [centos](<https://devfeed.tech/topics/centos.md>), [Debian](<https://devfeed.tech/topics/debian.md>), [Ubuntu](<https://devfeed.tech/topics/ubuntu.md>), [npm](<https://devfeed.tech/topics/npm.md>)

Tags: [centos](<https://devfeed.tech/tags/centos.md>), [debian](<https://devfeed.tech/tags/debian.md>), [deprecated](<https://devfeed.tech/tags/deprecated.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [install](<https://devfeed.tech/tags/install.md>), [node](<https://devfeed.tech/tags/node.md>), [node-js](<https://devfeed.tech/tags/node-js.md>), [npm](<https://devfeed.tech/tags/npm.md>), [ubuntu](<https://devfeed.tech/tags/ubuntu.md>)

### AI overview

A tutorial explaining how to install the deprecated Node.js 5.x release, including npm, on CentOS 7 and on Ubuntu, Debian, Linux Mint, and elementaryOS using official repositories, package managers, and installation scripts.

### Source excerpt

Node.js v5.x is deprecated. Take a look at the current instructions on how to install Node.js 6.x Long-Term Support (LTS) and Node.js 7.x. Node.js v5.0.0 (stable) was released today, just a month after the v4.x long-term-support (LTS) release! Here is a quick and easy way to install the current Node.js 5.x (including npm) on CentOS and Ubuntu/Debian. Installing Node.js 5.x on CentOS 7 The easiest way is to install the latest Node.

## How to install Node.js 4.x (LTS) on CentOS

DevFeed: [How to install Node.js 4.x (LTS) on CentOS](<https://devfeed.tech/articles/how-to-install-node-js-4-x-lts-on-centos-31824.md>)

Original publisher: [Read original article](<https://www.metachris.dev/2015/10/how-to-install-nodejs-4-on-centos/>)

Author: Chris Hager

Published: 2015-10-22T00:00:00Z

Content type: tutorial

Language: en

Sources: [Chris Hager](<https://devfeed.tech/sources/chris-hager.md>)

Topics: [Node.js](<https://devfeed.tech/topics/node-js.md>), [centos](<https://devfeed.tech/topics/centos.md>), [deprecated](<https://devfeed.tech/topics/deprecated.md>), [releases](<https://devfeed.tech/topics/releases.md>)

Tags: [centos](<https://devfeed.tech/tags/centos.md>), [deprecated](<https://devfeed.tech/tags/deprecated.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [install](<https://devfeed.tech/tags/install.md>), [lts](<https://devfeed.tech/tags/lts.md>), [node-js](<https://devfeed.tech/tags/node-js.md>)

### AI overview

A tutorial explains how to install Node.js 4.x, including its LTS release, on CentOS from the official RPM repository. It notes that Node.js 4.x is deprecated and points readers to newer Node.js installation instructions.

### Source excerpt

Node.js v4.x is deprecated. Take a look at the current instructions on how to install Node.js 6.x Long-Term Support (LTS) and Node.js 7.x. Recently io.js and node.js merged again into a single codebase in Node v4.0.0. The fork happened in December 2014 and io.js has seen rapid improvements and fast uptake of upstream V8 features. Now the merge has happened, and with it comes a lot of features from the io.

## Changing default php.ini file for PHP-CLI on CentOS

DevFeed: [Changing default php.ini file for PHP-CLI on CentOS](<https://devfeed.tech/articles/changing-default-php-ini-file-for-php-cli-on-centos-27620.md>)

Original publisher: [Read original article](<https://gagor.pro/2014/05/changing-default-php-ini-file-for-php-cli-on-centos/>)

Author: Tom

Published: 2014-05-08T00:00:00Z

Content type: tutorial

Language: en

Sources: [Tomasz Gągor](<https://devfeed.tech/sources/tomasz-gagor.md>)

Topics: [PHP](<https://devfeed.tech/topics/php.md>), [centos](<https://devfeed.tech/topics/centos.md>), [Command-line interface](<https://devfeed.tech/topics/cli.md>), [configuration](<https://devfeed.tech/topics/configuration.md>), [Script](<https://devfeed.tech/topics/script.md>)

Tags: [bash](<https://devfeed.tech/tags/bash.md>), [centos](<https://devfeed.tech/tags/centos.md>), [cli](<https://devfeed.tech/tags/cli.md>), [configuration](<https://devfeed.tech/tags/configuration.md>), [linux](<https://devfeed.tech/tags/linux.md>), [php](<https://devfeed.tech/tags/php.md>), [script](<https://devfeed.tech/tags/script.md>)

### AI overview

This tutorial explains how to use a separate php.ini configuration for PHP scripts running in CLI mode on CentOS, instead of sharing the system-wide configuration used by Apache and FPM.

### Source excerpt

On Debian in default installation you have different configuration files for PHP in Apache, FPM, CLI, etc. But on CentOS you have only one php.ini for all of them. In case I have, I need to have different configuration file for scripts running in CLI mode (more memory, etc). I could run it like this: php -c /etc/php-cli.ini script.php But this a little burdensome. So I do it like this:

## Sprawdzenie który proces obciąża dyski

DevFeed: [Sprawdzenie który proces obciąża dyski](<https://devfeed.tech/articles/sprawdzenie-ktory-proces-obciaza-dyski-27498.md>)

Original publisher: [Read original article](<https://gagor.pro/2011/09/sprawdzenie-ktory-proces-obciaza-dyski/>)

Author: Tom

Published: 2011-09-02T00:00:00Z

Content type: tutorial

Language: pl

Sources: [Tomasz Gągor](<https://devfeed.tech/sources/tomasz-gagor.md>)

Topics: [IO](<https://devfeed.tech/topics/io.md>), [cpu](<https://devfeed.tech/topics/cpu.md>)

Tags: [centos](<https://devfeed.tech/tags/centos.md>), [cpu](<https://devfeed.tech/tags/cpu.md>), [debian](<https://devfeed.tech/tags/debian.md>), [io](<https://devfeed.tech/tags/io.md>), [linux](<https://devfeed.tech/tags/linux.md>), [load](<https://devfeed.tech/tags/load.md>), [program](<https://devfeed.tech/tags/program.md>), [top](<https://devfeed.tech/tags/top.md>), [ubuntu](<https://devfeed.tech/tags/ubuntu.md>)

### AI overview

A server's load had been increasing because CPU cores were spending 80-90% of their time waiting for disk data, although no process significantly used the CPU. The article recommends iotop to identify processes generating disk load and notes that it is available in Debian's standard repositories.

### Source excerpt

Na jednym z serwerów zauważyłem dziwny wzrost obciążenia. Tzw. LOAD od kilku dni po woli rósł. top pokazywał że dwa rdzenie CPU czekają na dane z dysku - tzw. io wait na poziomie 80~90% ale żaden proces w znaczącym stopniu nie obciążał CPU. Jest kilka narzędzi (iostat, wmstat), które pozwalają monitorować obciążenie dysków ale ja nie szukałem informacji czy i w jakim stopniu dyski są obciążone - wiedziałem że są. Chciałem dowiedzieć się który proces generuje to obciążenie - by móc go ubić 😃

## My notes on vim

DevFeed: [My notes on vim](<https://devfeed.tech/articles/my-notes-on-vim-40720.md>)

Original publisher: [Read original article](<https://radek.io/posts/my-notes-on-vim/>)

Published: 2011-07-19T00:00:00Z

Content type: tutorial

Language: en

Sources: [Radek Pazdera](<https://devfeed.tech/sources/radek-pazdera.md>)

Topics: [Vim](<https://devfeed.tech/topics/vim.md>), [configuration](<https://devfeed.tech/topics/configuration.md>), [copy](<https://devfeed.tech/topics/copy.md>), [Terminal](<https://devfeed.tech/topics/terminal.md>), [centos](<https://devfeed.tech/topics/centos.md>), [Debian](<https://devfeed.tech/topics/debian.md>), [Fedora](<https://devfeed.tech/topics/fedora.md>), [rhel](<https://devfeed.tech/topics/rhel.md>), [Ubuntu](<https://devfeed.tech/topics/ubuntu.md>)

Tags: [centos](<https://devfeed.tech/tags/centos.md>), [command](<https://devfeed.tech/tags/command.md>), [configuration](<https://devfeed.tech/tags/configuration.md>), [copy](<https://devfeed.tech/tags/copy.md>), [debian](<https://devfeed.tech/tags/debian.md>), [editor](<https://devfeed.tech/tags/editor.md>), [fedora](<https://devfeed.tech/tags/fedora.md>), [file](<https://devfeed.tech/tags/file.md>), [rhel](<https://devfeed.tech/tags/rhel.md>), [terminal](<https://devfeed.tech/tags/terminal.md>), [vim](<https://devfeed.tech/tags/vim.md>)

### AI overview

A practical set of notes on learning Vim, focusing on configuration and clipboard integration. It explains how to check for X11 clipboard support, use vimx or the vim-X11 package on relevant distributions, and configure an alias for copying and pasting between Vim and the system clipboard.

### Source excerpt

I build software products and write on the Internet.