Apt

apt-get

Update the local cache of the repositories:

sudo apt-get update

Update all installed packages

sudo apt-get upgrade

Remove a package

sudo apt-get remove ${PACKAGE}

Use to locate packages by searching name and description:

apt-cache search tree

Use to locate packages that provide a given file. First you must retrieve the database & indexes:

sudo apt-file update

Then search for the file:

apt-file search rpmbuild

List the files that belong (or would be installed by a package):

apt-file list git-deamon-run

To list the installed packages:

dpkg -l

To list the files installed by an installed package:

dpkg -L ${package}

To list the files that would be installed by a package

dpkg -c ${.deb file}

To find which package owns a file

dpkg -S ${filename}

To install

dpkg -i ${.deb file}

To remove

dpkg -r ${package}