apt-get - Package manager for Debian based distros.
Update system packages list:
apt-get update
Upgrade all installed packages on the system:
apt-get upgrade
Install a specific package:
apt-get install firefox
Install multiple packages:
apt-get install firefox chromium-browser
Install multiple packages using wildcard:
apt-get install '*package-name*'
Upgrade only specific packages
apt-get install firefox --only-upgrade
Remove package:
apt-get remove firefox
Remove package including configuration files:
apt-get purge firefox
apt-get remove --purge firefox
Free up space from local repository:
apt-get clean
Download source code of package:
apt-get --download-only source firefox
Download a package without installing:
apt-get download firefox
Check broken dependencies:
apt-get check