command-not-found.com

visudo

Safely edit the sudoers file. More information: <https://www.sudo.ws/docs/man/visudo.man>.

archey

Simple tool for stylishly displaying system information. More information: <https://lclarkmichalek.github.io/archey3/>.

ping6

Send ICMP ECHO_REQUEST packets to network hosts via IPv6 address. More information: <https://manned.org/ping6>.

ffmpeg

Video conversion tool. More information: <https://ffmpeg.org>.

redshift

Adjust the color temperature of your screen according to your surroundings. More information: <http://jonls.dk/redshift>.

fd

An alternative to find. Aims to be faster and easier to use than find. More information: <https://github.com/sharkdp/fd>.

tmux

Terminal multiplexer. It allows multiple sessions with windows, panes, and more. See also: zellij, screen. More information: <https://github.com/tmux/tmux>.

fc-pattern

Shows information about a font matching a pattern. More information: <https://manned.org/fc-pattern>.