7/30/2019 Debian GNU/Linux Reference Card

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Dpkgdpkg --compare-versions v1 gtv2

Compare version numbers,check with echo $?.

dpkg-query -W --showformat=format

Query installed packages,format e.g. '${Package}${Version}${Installed-Size}\n'.

dpkg --get-selections >file

Write package selections tofile.

dpkg --set-selections file Overwrite file with output ofcommand.

command >> fileAppend output of commandto file.

cmd1 | cmd2Use output of command 1 asinput of command 2.

command < fileUse file as input forcommand.

APT

apt-get update

Update packages listingsfrom package repositories

as listed in/etc/apt/sources.list.Required whenever that fileor the contents of therepositories change.

apt-cache searchsearch-string

Search packages anddescriptions for search-string.

apt-cache policypackage-names

Show versions and prioritiesof available packages.

apt-cache showpackage-names

Show package informationincl. description.

APTapt-cacheshowpkg package-names

Show packagedependencies (neededpackages).

apt-get installpackage-names

Install packages fromrepositories with alldependencies.

apt-get upgradeInstall newest versions of allpackages currentlyinstalled.

apt-get

dist-upgrade

Like apt-get upgrade, butwith advanced conflict

resolution.apt-get removepackage-names

Remove packages with allneeded packages.

apt-getautoremove

Remove packages that noother packages depend on.

apt-cache dependspackage-names

List all packages needed bythe one given.

apt-cacherdependspackage-names

List all packages that needthe one given.

apt-file updateUpdate content listingsfrom package repositories,see apt-get update

apt-file searchfile-name

Search packages for file.

apt-file listpackage-name

List contents of a package.

auto-apt

Installs packagesautomatically if needed, canreplace apt-file, needsauto-apt.

aptitudeConsole interface to APT,needs aptitude.

synapticGUI interface to APT, needssynaptic.

Dpkgdpkg -l [names] List packages.dpkg -I pkg.deb Show package information.dpkg -c pkg.deb List contents of package file.

dpkg -S filenameShow which package a filebelongs to.

dpkg -i pkg.deb Install package files.

debsumsAudit check sums ofinstalled packages, needsdebsums.

dpkg-divert[options] file

Override a package'sversion of a file.