Learning how to use the terminal is a side effect I gained after switching to GNU/Linux. It is absolutely not necessary to know how to use it, but it makes you more productive (and look cooler?). These are some command line applications I use:

• Chafa
  • Displays images and gifs in the terminal
• Lf + lfimg
  • `lf` (list files) is a terminal file manager. I use `lf` with `lfimg` which allows you to preview the text files, render images/gifs and shows properties of binary files.
• Neovim
  • Text editor. If you are too lazy to customize it with plugins you should use LunarVim. I use `neovim` whenever I need to make a small change to a file, I tend to use “VS Code” for actual heavy-duty programming.
• Glow
  • Fast and simple markdown renderer. Definitely worth checking out charm.sh.
• Cmus
  • fast and feature rich music player. Honestly I prefer `cmus` over any music player GUI or non-GUI.
• Doas
  • `sudo` but less bloated and better security due to less surface attack. There is only one problem with `doas` and that is it currently does not work with `makepkg`.
• Jdupes
  • A powerful duplicate file finder and an enhanced fork of `fdupes`. 
• Optipng
  • Optimize and compress images.
• Exiftool
  • Remove or manipulate metadata of files.
• Trash-cli
  • I have `rm` aliased to this command (the documentation says not to). This can be the difference between life and death. `rm -rf` is a dangerous command to run. Its safer to trash the file/folder than permanently deleting it.
• Chezmoi
  • Manages dotfiles and configurations of various programs (like the ones in this list).
• Mosh
  • Alternative `ssh` which maintains connection after changing networks, running commands using it is faster than regular `ssh`. Use `screen` with `mosh` to maintain a connection after closing the client.
• Pwgen
  • generates passwords or random strings.
• Bat
  • `cat` but with syntax highlighting and integration with `git`. I have `bat —paging=never` aliased to this command.
• Zoxide
  • `cd` but remembers previous directories.
• Lsd
  • `ls` but deluxe. Its a rewrite of `ls` in rust. I have `ls` aliased to this command.
• Tokei
  • Counts number of files, code written, comments, blank spaces, and lines of code used within a directory.  
• Ripgrep
  • `grep` but modernized and faster. I have `grep` aliased to this command.
• Pfetch
  • Minimal system information and shows OS’s logo. One can say its `neofetch` but with one less config file.
• hostnamectl
  • Changes hostname and lists information about the host machine.
• Inxi
  • Provides a ton of system information. 
• Pipes.sh
  • Cool looking screensaver.
• Unimatrix
  • Cool looking screensaver, inspired by “The Matrix” movie but better than `cmatrix`.
• TTY-clock
  • Clock that displays the time.
• Htop
  • Process viewer.
• Gotop
  • Activity monitor.
• Radeontop
  • Shows GPU usage. This program is aimed at AMD graphics based systems.
• Powertop
  • Power consumption monitor and power saving tool.
• Speedometer
  • Shows network usage. This program has a lot of configuration options!
• Lolcat
  • Makes output of last command rainbow.
• Pywal
  • Generates color schemes based of a provided images. I use `pywal` in a script to automatically choose a random image (or I can manually choose one) to use as my wallpaper and theme my desktop to match its colors.
• Ansi2html
  • Command that converts text with ANSI colors to HTML or LaTeX.
• Script
  • Linux kernel command which records commands ran by the user and their outputs (stdin/stdout) to a file.
• Cheat
  • List common hard to remember terminal programs usage.
• Fd
  • User-friendly alternative to `find`.
• Ncdu
  • Disk usage analyzer with an ncurses interface.
• Gdu
  • Disk usage analyzer but written in go.
• shellcheck
• konsave
• nvtop