Debian

Examples

dpkg -S /sbin/file

... show which package /sbin/file belongs to

dpkg-query -L <package>

... lists all files belonging to package

dpkg-deb -I package.deb

... displays information about the .deb file

rm /etc/ssh/*key* && dpkg-reconfigure openssh-server && /etc/init.d/ssh restart

... regenerate the opensshd keys

localedef -v -c -i en_US -f UTF-8 en_US.UTF-8

... create utf8 locale

apt-get install rcconfig

... tool for (re-)setting rc scripts

lsb_release -ircd

... check the current Debian / Ubuntu version

Hacks

systemctl enable wg-quick@wg0.service

... enables the Wireguard service

sudo nmtui

... starts Network Manager UI and allows for setting up a static IP