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

inxi -Frxzc0 shows your pc specs sudo ufw enable enable firewall sudo ufw disable disable firewall SomeCommand > SomeFile.txt output of a command to a text file (dpkg –list > applist.txt)

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