To add swap to an Amazon Linux EC2 or Lightsail instance on AWS, you can use the following steps: Connect to your instance via SSH. Check if there is any existing swap partition by running the command sudo swapon –show If there is no existing swap partition, create a new one by running the command … Read more
The ls command in Linux and Unix is case-sensitive by default, but you can make it case-insensitive by using the -f option (which tells ls to not sort the files) in combination with the -i option (which tells ls to ignore the case when sorting). Here’s an example command that runs the ls command in … Read more
To install MySQL server on Ubuntu 22.04 LTS Linux, you can use the package manager apt. First, make sure the package database is up to date by running: sudo apt update Then install the MySQL server package: sudo apt install mysql-server During the installation process, you will be prompted to set a root password for … Read more
Upgrading to a new version of OpenSUSE from the command line involves the following steps: Make sure your system is up-to-date: Before you begin the upgrade process, you should ensure that your system is fully up-to-date by running the command zypper update. This will update any existing packages to the latest version. Backup your data: … Read more
To install the dig, delv, and host commands on FreeBSD, you can use the package manager pkg. First, make sure the package database is up to date by running: sudo pkg update Then install bind-tools package, which includes dig, delv, and host commands: sudo pkg install bind-tools Alternatively, you can use the ports system to … Read more
You can check the version of Raspberry Pi OS (formerly Raspbian) that is currently installed on your Raspberry Pi by using the command cat /etc/os-release. This command will display a file called os-release, which contains information about the operating system, including the version number. Alternatively, you can use the command lsb_release -a, this command will … Read more
You can use the command dpkg-query to list all installed packages and their sizes on a Debian or Ubuntu system. You can then sort the list by size to find the packages that are using the most space. Here’s an example command that will list the installed packages in descending order of size: dpkg-query -Wf … Read more
You can tell the ssh client to ignore the ssh config file by using the “-F” option and specifying an empty or non-existent config file. For example: ssh -F /dev/null user@host This tells ssh to use an empty config file instead of the default one located at ~/.ssh/config ssh -F /path/to/nonexistent/config user@host This tells ssh … Read more
FFmpeg is a command-line tool that can be used to convert video files to GIFs on Linux. Here’s an example command that shows how to convert a video file called “input.mp4” to a GIF called “output.gif”: ffmpeg -i input.mp4 -vf “fps=15,scale=320:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse” output.gif This command does the following: -i input.mp4 specifies the input video file -vf … Read more
Mastodon is an open-source, decentralized social media platform that is similar to Twitter. One feature of Mastodon is the ability for users to verify their accounts, which indicates that the account is legitimate and run by the person or organization it claims to be. To add Mastodon verification to your Discourse forum, you will need … Read more