Docu review done: Tue 17 Oct 2023 10:53:15 AM CEST

Table of Content

Commands for
- apt
- apt-cache
- apt-get
- apt-mark
- apt-key
- apt-show-versions
Files

Commands for

apt

Commands	Descriptions
`apt install [packagename]=[versoin]`	installs package in given version
`apt download [packagename]`	downloads only the deb file
`apt changelog [packagename]`	shows changelog for package
’apt –with-new-pkgs upgrade [packagenames]`	upgrade held back packages by installing new dependencies

apt-cache

Commands	Descriptions
`apt-cache showpkg [packagename]`	shows dependencies in details
`apt-cache stats`	shows local cache information
`apt-cache policy`	lists repositories and there priorities as well as pined packages
`apt-cache policy [packagename]`	shows priorities for given package only (for all package versions)
`apt-cache rdepends [packagename]`	lists reverse dependencies for package
`apt-cache rdepends [packagename] --installed`	same as above + only installed packages
`apt-cache rdepends [packagename] --installed --no-recommends --no-suggests`	same as above + no recommends and no suggests

apt-get

Commands	Descriptions
`apt-get check [packagename]`	generates dependency tree, shows broken dependencies

apt-mark

Commands	Descriptions
`hold [packagename]`	holds package to current installed version
`unhold [packagename]`	removes hold on package
`showhold`	lists all packages with have the hold mark set

apt-key

Commands	Descriptions
`apt-key`	interact with gpg keys
`apt-key export <keyid>` \| `gpg --dearmour -o /etc/apt/trusted.gpg.d/<name of project/tyeam/...>.gpg`	Exports and creates `.gpg` file for keys stored in `trusted.db`

apt-show-versions

Commands	Descriptions
`apt-show-versions`	parses the dpkg status file and the APT lists for the installed and available package versions and distribution and shows upgrade options within the specific distribution of the selected package
`apt-show-versions [-i	–initialize]`
`apt-show-versions [-u	–upgradable]`
`apt-show-versions [-p	–package] [package-name] [-a
`apt-show-versions [-r	–regex] [regex]`
`apt-show-versions [-R	–regex-all] [regex]`

Files

Directory	Description
`/var/cache/apt`	package cache
`/var/lib/apt/lists`	contains (In)Release/Package from all apt sources