Debian Linux Handbook

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How to restart your network connection

sudo service network-manager restart

See which tasks and processes are running

top

Which linux kernel/version

uname -a

See sources list your OS is using

cat /etc/apt/sources.list

Run an app as root

sudo nemo

List all installed packages

dpkg --list

Update and/or delete an app

sudo apt-get upgrade firefox            <-- update an app
sudo apt-get remove “package-name”      <-- delete app
sudo apt-get purge “package-name”       <-- delete apps + settings
sudo apt-get autoremove                 <-- remove all dependencies you don't need
sudo apt autoclean && sudo apt autoremove

Enable firewall

sudo ufw enable

Disable firewall

sudo ufw disable  

Show your PC specifications

inxi -Frxzc0 

Output of a command to a text file\ fx

dpkg --list --> appl_list.txt

Shortcut to shutdown/restart/suspend
CTRL+DEL+END