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nixCraft

@nixCraft
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nixCraft

10 Apr 2020, 02:16

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How about a little Linux project that brings fun back into your life? Use the text filter Boxes command to create email signatures or regional comments in any programming language using a text editor such as vim? A howto is here.The post Linux / Unix Desktop Fun: Text Mode ASCII-art Box and Comment Drawing appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/2hKtrJj
Text Mode ASCII-art Box and Comment Drawing in Linux - nixCraft
Linux/Unix desktop fun - Learn how to draw text mode ASCII-art box around text or code/scripts in vim / vi under for fun and profit.
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nixCraft

10 Apr 2020, 01:16

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How do I uninstall package or software using the command line in Linux operating systems? How can I uninstall software on a Debian or Ubuntu Linux? Can you tell me command to uninstall package on a CentOS/RHEL/Oracle/Fedora Linux? The post Linux uninstall package / software using the CLI appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/2XpKD9h
Linux uninstall package / software using the CLI - nixCraft
This page explains various commands to uninstall package / software on various Linux distros such as Ubuntu/Debian, Fedora/CentOS/RHEL, OpenSUSE and more.
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nixCraft

9 Apr 2020, 00:12

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{Updated} Learn how to fix the 'sudo: add-apt-repository command not found' error on Ubuntu or Debian Linux when you try to install PPA.The post Ubuntu add-apt-repository command not found error and solution appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/2UX0ElL
Ubuntu add-apt-repository command not found error and solution - nixCraft
Learn how to fix ‘sudo add-apt-repository command not found’ Error on Ubuntu and Debian Linux based system when using PPA.
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nixCraft

8 Apr 2020, 23:12

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{Updated} dig is a network administration and sysadmin command-line tool for querying the Domain Name System (DNS). The dig man page lacks many practical examples that are needed by sysadmin to troubleshoot DNS issues. This page explains how to use dig command on Linux or Unix-like systems.The post Linux and Unix dig Command Examples appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/2JQZTnK
Linux and Unix dig Command Examples - nixCraft
Syntax, information and practical examples about the Linux and Unix dig command to query DNS name servers and to performs DNS lookups & displays the answers
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nixCraft

22 Mar 2020, 21:25

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Let us test your basic knowledge of Unix systems, including commands. The post Unix Basics Quiz appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/2UbsPNg
Unix Basics Quiz - nixCraft
Let us test your basic knowledge of Unix systems, including commands.
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nixCraft

20 Mar 2020, 22:40

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I got a cluster of servers powered by OpenSUSE / SUSE Enterprise Linux. How can I update all of them using the zypper module of Ansible? How can I use Ansible for system updates and reboot the server when kernel upgrades took place on SUSE/OpenSUSE? The post Ansible zypper update all packages on OpenSUSE/SUSE appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/33GWqBu
Ansible zypper update all packages on OpenSUSE/SUSE - nixCraft
Explains how to use Ansible zypper module to update all packages on SUSE Enterprise or OpenSUSE Linux and reboot boxes when kernel updated using a reboot module.
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nixCraft

15 Mar 2020, 02:35

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Why do some shell/perl/python scripts begin with #!/usr/bin/env? How do you make your Unix script portable across different UNIX like operating systems?The post Make Linux/Unix Script Portable With #!/usr/bin/env As a Shebang appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/2JW2jzS
Make Linux/Unix Script Portable With #!/usr/bin/env As a Shebang - nixCraft
Learn how to make Linux/Unix script portable with #!/usr/bin/env shebang to execute script using the interpreter such as bash, perl, python.
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nixCraft

13 Mar 2020, 20:35

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How do I install and set up WireGuard VPN server on a CentOS 8 Linux? How can I configure CentOS 8 as the WireGuard VPN server? The post CentOS 8 set up WireGuard VPN server appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/3aS5F3X
CentOS 8 set up WireGuard VPN server - nixCraft
A step by step guide helps you configure and set up WireGuard VPN on CentOS 8 server and a Linux desktop client, including firewalld configurations.
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nixCraft

12 Mar 2020, 21:11

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How do I set up an OpenVPN Server on CentOS 8 Linux server to shield my browsing activity from bad guys on public Wi-Fi, and more? The post CentOS 8 Set Up OpenVPN Server In 5 Minutes appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/3cT2rz5
CentOS 8 Set Up OpenVPN Server In 5 Minutes - nixCraft
Learn how to set up your own secure OpenVPN server in just a few minutes on a CentOS 8 Linux server running in the cloud.
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nixCraft

11 Mar 2020, 14:11

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ls is a command to show files in Linux and Unix-like operating systems. A ls command first appeared in a version of AT&T UNIX UNIX as well as in Multics. BSD and GNU Coreutils package provides the ls command with minor syntax changes. There is now third alternative named exa. It is a modern replacement for ls command.The post exa a modern replacement for ls command in rust for Linux/Unix appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/2v6rp8E
exa a modern replacement for ls command in rust for Linux/Unix - nixCraft
exa is a modern replacement for ls for Linux/Unix-like system and it is written in rust for listing files at your shell prompt.
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nixCraft

11 Mar 2020, 13:11

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Linux Trivia: Linux very nearly wasn't called Linux. Did you know what Linus wanted to call his kernel initially? 1. Free Unix 2. Freax 3. LinusOS 4. TuxOS Think you know the answer? The post Linux Trivia: Did you know what Linus wanted to call his kernel initially? appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/38Il7y4
Linux Trivia: Did you know what Linus wanted to call his kernel initially? - nixCraft
Linux very nearly wasn't called Linux. Did you know what Linus wanted to call his kernel initially?
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nixCraft

10 Mar 2020, 23:11

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{Updated} Unix and Linux command line tricks to increase productivity at the Terminal. I have found them over the years, and I am now going to share with you.The post 20 Unix/Linux Command Line Tricks - Part I appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/2DMybVb
20 Unix/Linux Command Line Tricks - Part I
Unix, macOS and Linux command line tips and tricks to increase your productivity at the bash shell prompt for fun and profit.
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nixCraft

10 Mar 2020, 23:11

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{Updated} I am new Linux user and sysadmin for CentOS enterprise Linux 7 running on couple of VMs and bare metal boxes. How to add lines to end of file? How do I append text to end of file using the cli on Linux? What command I need to type to send the output of the command to end of file?The post Linux append text to end of file appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/3cR2Q5g
Linux append text to end of file - nixCraft
Appending Redirected Output in Linux: Explains how to append/add text or output of Linux/Unix command to a text file & append text to end of file using tee
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nixCraft

10 Mar 2020, 19:11

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Let us test your basic knowledge of Linux systems, including commands. The post Linux Quiz appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/2TCu9II
Linux Quiz - nixCraft
Let us test your basic knowledge of Linux systems, including commands.
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nixCraft

3 Mar 2020, 21:29

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Let's Encrypt is a non-profit certificate authority that provides X.509 certificates for Transport Layer Security (TLS) encryption free of cost. The TLS certificate is valid for 90 days only. However, Due to the bug, they need to revoke many (read as "certain") Let’s Encrypt TLS/SSL certificates. Let us see how to find out if you are affected by this bug and how you can fix it to avoid any problems with your TLS/SSL certificates. The post Letsencrypt is revoking certificates on March 4 appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/2IiUWDE
Letsencrypt is revoking certificates on March 4 - nixCraft
Letsencrypt is revoking TLS/SSL certificates on March 4, 2020 due to a bug. Here is how to find out whether host certificate needs replacement
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nixCraft

2 Mar 2020, 22:29

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I am trying to add entry to /etc/hosts file using 'sudo echo '192.168.1.254 router' >> /etc/hosts' command, but getting an error that read as, -bash: /etc/hosts: Permission denied. How do I insert or append text to a file when running sudo command on Linux or Unix-like system?The post How to append text to a file when using sudo command on Linux or Unix appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/2s9g9GE
How to append text to a file when using sudo command on Linux or Unix - nixCraft
Explains how to append text or add/insert data into a file using sudo command under Linux or Unix-like system with help of tee and other commands.
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nixCraft

2 Mar 2020, 22:29

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How do I enable firewalld logging for denied packets on Linux operating systems so that I can view all dropped packets information? How can I view a log of the traffic blocked by FirewallD under a CentOS/RHEL (Red Hat Enterprise Linux)/Suse/OpenSUSE Linux? The post How to enable firewalld logging for denied packets on Linux appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/32JeHxg
How to enable firewalld logging for denied packets on Linux - nixCraft
Explains how to enable firewalld logging for denied packets on a CentOS/RHEL/Fedora/SUSE/OpenSUSE Linux using the CLI and GUI tools.
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nixCraft

1 Mar 2020, 23:29

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LXD is a next generation system container manager. It offers a user experience similar to virtual machines but using Linux containers instead. It's image based with pre-made images available for a wide number of Linux distributions. How do I set up and install LXD on a CentOS 8.x or RHEL 8.x server? The post How to Set Up and Use LXD on CentOS 8.x / RHEL 8.x appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/38bXHRI
How to Set Up and Use LXD on CentOS 8.x / RHEL 8.x - nixCraft
Explains how to set up and deploy LXD on CentOS Linux 8.x or RHEL 8.x and create your first isolated containers for web apps.
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nixCraft

29 Feb 2020, 07:31

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How do I show line numbers in Vim by default on Linux? The post Vim show line numbers by default on Linux appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/3chyWqn
Vim show line numbers by default on Linux - nixCraft
Explains how to show line numbers in vim permanently when we launch vim text editor on a Linux, macOS, or Unix-like systems.
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nixCraft

28 Feb 2020, 22:31

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{Updated} How can I append a current date from a variable to a filename under Linux or Unix bash shell? How do I append date to filename?The post Append Current Date To Filename in Bash Shell appeared first on nixCraft.

via [RSS/Feed] nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format https://ift.tt/2T96Iqn
Append Current Date To Filename in Bash Shell - nixCraft
Explains how to append the current date or time to a filename from a shell variable under macOS, Linux, *BSD, and Unix bash shell scripting.
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