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Linux/Unix: pstree Command Examples: See A Tree Of Processes
I am a new Linux user. How do I display the process on the Linux based server or desktop/laptop in easy to read tree format using bash shell prompt?
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The post Linux/Unix: pstree Command Examples: See A Tree Of Processes appeared first on nixCraft.
2024-05-12T19:29:49Z
2024-05-12T19:29:49Z
Vivek Gite
How to enable Debian 12 Backports repository
The Debian Linux 12 backports repository offers updated versions of software packages for Debian Stable releases. These packages are sourced from Testing (and sometimes Unstable) branches of Debian, and then optimized and recompiled to function on the current Stable release, such as Bookworm. Let us see how to install and use Debian Linux 12 "Bookworm" Backports repository.
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The post How to enable Debian 12 Backports repository appeared first on nixCraft.
2024-05-11T11:02:39Z
2024-05-11T11:02:39Z
Vivek Gite
How to copy permissions from one file to another on Linux
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?
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The post How to copy permissions from one file to another on Linux appeared first on nixCraft.
2024-05-08T22:06:06Z
2024-05-08T22:06:06Z
Vivek Gite
A Bash Script to Read All Command Line Arguments into an Array: Simplify Argument Handling
If you are writing a Bash shell script, you should read command-line arguments into an array for some time. This allows us to process any number of arguments provided when the script is run. This makes the script adaptable to different use cases. Instead of dealing with fixed variables like $1, $2, $3, etc., you can work with any number of arguments more dynamically using bash for loop or bash while loop, depending upon your needs. Arrays make it simple to loop through each argument and perform operations on them, whether basic printing or complex processing. Bash provides a mapfile (readarray command) internal built-in command to read lines from a file into an array variable. Let us see how to use mapfile to read all command line arguments into an array.
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The post A Bash Script to Read All Command Line Arguments into an Array: Simplify Argument Handling appeared first on nixCraft.
2024-05-07T10:40:08Z
2024-05-07T10:40:08Z
Vivek Gite
How to Pin Versions in Yum or Dnf for RHEL or CentOS Linux
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.
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The post How to Pin Versions in Yum or Dnf for RHEL or CentOS Linux appeared first on nixCraft.
2024-05-07T09:01:47Z
2024-05-07T09:01:47Z
Vivek Gite
How to perform find and replace operations within a visual selection in Vim
Here's a quick tip for vim users. You can perform find and replace operations within a visual selection in Vim for text or code block. Visual selection for finding and replacing text in Vim allows developers and Linux/Unix users precise and efficient text editing. It's handy when you want to change specific portions of text or code blocks within a larger file without affecting other occurrences. This method required to minimizing manual search and reducing the risk of unintended code or text modifications. Let us see how to find and replace in Vim visual mode selection.
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The post How to perform find and replace operations within a visual selection in Vim appeared first on nixCraft.
2024-05-07T06:14:33Z
2024-05-07T06:14:33Z
Vivek Gite
How to find hidden processes and ports on Linux/Unix/Windows
Unhide is a little handy forensic tool to find hidden processes and TCP/UDP ports by rootkits / LKMs or by another hidden technique. This tool works under Linux, Unix-like system, and MS-Windows operating systems.
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The post How to find hidden processes and ports on Linux/Unix/Windows appeared first on nixCraft.
2024-05-07T05:05:51Z
2024-05-07T05:05:51Z
Vivek Gite
How to add bash auto completion in Debian Linux
Bash is a command language interpreter compatible with sh. It can execute commands read from a file or keyboard. On Debian Linux, bash-completion is a set of shell functions that uses Bash's programmable completion feature. This page provides instructions on installing and enabling Bash auto-completion on Debian Linux versions 10, 11, and 12 to increase productivity by writing custom bash code.
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The post How to add bash auto completion in Debian Linux appeared first on nixCraft.
2024-05-06T15:51:25Z
2024-05-06T15:51:25Z
Vivek Gite
How to add cron job entry for acme.sh
Recently, I had a learning experience with cron jobs and acme.sh. acme.sh is an excellent tool that simplifies the management of Let's Encrypt TLS (SSL) certificates. It makes obtaining and renewing these essential security certificates for your web server easier.
Recently, I moved my server from Linode to AWS, which was a new environment for me. Initially, everything appeared to be working correctly, and I assumed everything was running smoothly. However, I forgot to migrate the cron job that acme.sh uses to renew the certificate automatically.
This oversight caused my Let's Encrypt certificates to expire, resulting in security warnings and potential disruptions for visitors to my website. Opps!
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The post How to add cron job entry for acme.sh appeared first on nixCraft.
2024-05-03T06:43:12Z
2024-05-03T06:43:12Z
Vivek Gite
How to Upgrade Ubuntu 22.04 to 24.04 LTS: A Complete Guide
{nixCraft Patreon supporters content}Below is a sneak peek of this content! Ubuntu 24.04 LTS (Noble Numbat) was launched on April 25th, 2024. This new version will be supported for five years until June 2029. The armhf architecture now provides support for the Year 2038 problem. The upgrades include significant updates to core packages like Linux kernel, systemd, Netplan, […]The post How to Upgrade Ubuntu 22.04 to 24.04 LTS: A Complete Guide appeared first on Opensource Flare✨.
2024-04-26T18:25:08Z
2024-04-26T18:25:08Z
Vivek Gite
How to Upgrade Ubuntu 22.04 to 24.04 LTS: A Complete Guide
Ubuntu 24.04 LTS (Noble Numbat) was launched on April 25th, 2024. This new version will be supported for five years until June 2029. The armhf architecture now provides support for the Year 2038 problem. The upgrades include significant updates to core packages like Linux kernel, systemd, Netplan, toolchain upgrades for better development support, enhanced security measures, and performance optimizations. It also has an updated GNOME desktop environment and other default applications. Let us see how to upgrade Ubuntu 22.04 LTS to Ubuntu 24.04 LTS using the CLI over ssh-based session.
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The post How to Upgrade Ubuntu 22.04 to 24.04 LTS: A Complete Guide appeared first on nixCraft.
2024-04-26T08:33:21Z
2024-04-26T08:33:21Z
Vivek Gite
How to configure AWS SES with Postfix MTA on Debian Linux
AWS SES (Amazon Simple Email Service) is a cloud-based email-sending service that is both reliable and cost-effective. This service is offered by Amazon Web Services. Postfix is a popular email server for Debian and Unix-like systems. It is an open-source Mail Transfer Agent (MTA) responsible for routing and delivering emails. Debian Linux is a widely used Linux distribution known for its stability and user-friendliness for server usage. Let us see how to integrate AWS SES with the Postfix MTA on Debian Linux version 11/12.
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The post How to configure AWS SES with Postfix MTA on Debian Linux appeared first on nixCraft.
2024-04-19T07:04:06Z
2024-04-19T07:04:06Z
Vivek Gite
The repository ‘http://deb.debian.org/debian buster-backports Release’ no longer has a Release file.
When you run the sudo apt update, you may see the following message or error on a Debian Linux:
Err:5 http://deb.debian.org/debian buster-backports Release
404 Not Found [IP: 146.75.34.132 80]
Reading package lists... Done
E: The repository 'http://deb.debian.org/debian buster-backports Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
Here is how to fix this issue.
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The post The repository ‘http://deb.debian.org/debian buster-backports Release’ no longer has a Release file. appeared first on nixCraft.
2024-04-14T20:42:01Z
2024-04-14T20:42:01Z
Vivek Gite
How do I find out my timezone in Linux?
You can find the timezone in Linux using the command line. The easiest way to do this is to type the "timedatectl" command and look for the "timezone" line when using modern Linux distros with systemd. There are other commands and ways to temporarily switch to a new timezone for date calculations.
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The post How do I find out my timezone in Linux? appeared first on nixCraft.
2024-04-06T01:06:44Z
2024-04-06T01:06:44Z
Vivek Gite
Transform Your Raspberry Pi 5 Into a Desktop Powerhouse with Alpine Linux - Geeky Gadgets
Categories: Linux
Full Circle / EA confirm again that skate. will not support Linux, Steam Deck or macOS - GamingOnLinux
Full Circle / EA confirm again that skate. will not support Linux, Steam Deck or macOS GamingOnLinux
Categories: Linux
Unhappy Ending! Kubuntu Creator Jonathan Riddell Departs After 25 Years with KDE - It's FOSS News
Categories: Linux
UK's MI5 'Unlawfully' Obtained Data From Former BBC Journalist
Bruce66423 shares a report from The Guardian: MI5 has conceded it "unlawfully" obtained the communications data of a former BBC journalist, in what was claimed to be an unprecedented admission from the security services. The BBC said it was a "matter of grave concern" that the agency had obtained communications data from the mobile phone of Vincent Kearney, a former BBC Northern Ireland home affairs correspondent. The admission came in a letter to the BBC and to Kearney, in relation to a tribunal examining claims that several reporters in Northern Ireland were subjected to unlawful scrutiny by the police. It related to work carried out by Kearney for a documentary into the independence of the Office of the Police Ombudsman for Northern Ireland (PONI). Kearney is now the northern editor at Irish broadcaster RTE.
In documents submitted to the Investigatory Powers Tribunal (IPT), MI5 conceded it obtained phone data from Kearney on two occasions in 2006 and 2009. Jude Bunting KC, representing Kearney and the BBC, told a hearing on Monday: "The MI5 now confirms publicly that in 2006 and 2009 MI5 obtained communications data in relation to Vincent Kearney." He said the security service accepted it had breached Kearney's rights under article 8 and article 10 of the European convention on human rights. They relate to the right to private correspondence and the right to impart information without interference from public authorities. "This appears to be the first time in any tribunal proceedings in which MI5 publicly accept interference with a journalist's communications data, and also publicly accept that they acted unlawfully in doing so," Bunting said. He claimed the concessions that it accessed the journalist's data represented "serious and sustained illegality on the part of MI5." Bruce66423 comments: "The good news is that it's come out. The bad news is that it has taken 16 years to do so. The interesting question is whether there will be any meaningful consequences for individuals within MI5; there's a nice charge of 'malfeasance in public office' that can be used to get such individuals into a criminal court. Or will the outcome be like that of when the CIA hacked the US Senate's computers, lied about it, and nothing happened?"
Read more of this story at Slashdot.
Critical Linux Vulnerability: 0-Click N-Days Exploit Allows Remote Code Execution - Red Hot Cyber
Categories: Linux
