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dpkg-query

A tool that shows information about installed packages. More information: <https://manpages.debian.org/latest/dpkg/dpkg-query.1.html>.

xtrlock

Lock the X display until the user supplies their password. More information: <https://manned.org/xtrlock>.

xclip

X11 clipboard manipulation tool, similar to xsel. Handles the X primary and secondary selections, plus the system clipboard (Ctrl + C/Ctrl + V). More information: <https://manned.org/xclip>.

kexec

Directly reboot into a new kernel. More information: <https://manned.org/kexec>.

snapper

Filesystem snapshot management tool. More information: <http://snapper.io/manpages/snapper.html>.

hr

Print a horizontal rule in the terminal. More information: <https://github.com/LuRsT/hr>.

bash

Bourne-Again SHell, an sh-compatible command-line interpreter. See also: zsh, histexpand (history expansion). More information: <https://www.gnu.org/software/bash/>.

srm

Securely remove files or directories. Overwrites the existing data one or multiple times. Drop in replacement for rm. More information: <http://srm.sourceforge.net/srm.html>.