Debian

• Apt-usage
• Create and restore apt-package-list

Apt-usage

Install package

apt-get install <packagename>

search package

apt-cache search <packagename> or <packagedescription>

remove package

apt-get remove <packagename> to remove but letting configfiles untouched

apt-get purge <packagename> to remove with configfiles and without checking dependencies

apt-get autoremove remove unneccesary Packages

Update Package-Cache

apt-get update

Upgrade Packages

and (without installing additional) dependencies

àpt-get upgrade

can lead to breaking. To install needed dependencies do:

apt-get install -f

Upgrade whole OS

apt-get dist-upgrade

Create and restore apt-package-list

you can use this list for example to install all your apt packages on another machine, for example if you migrage or want to start over on a fresh installation

dpkg --get-selections | awk '$2 == "install" {print $1}' > packages.list.save

Restore your apt-packages

xargs -a "packages.list.save" sudo apt-get install

Don't forget to save your /etc/apt/sources.list and /etc/apt/sources.list.d/*, too!