Linux Administration - Maintanence

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apt-get

Files
/etc/apt - apt-get directory /etc/apt/sources.list - source list used to update packages on system
Commands
> apt-get update Re-synchronizes package index files.

> apt-get upgrade Upgrades packages on system to their newest versions.

> apt-get dist-upgrade Does "apt-get upgrade" and resolves dependency issues

> apt-get -s dist-upgrade Simulate distribution upgrade. Installs nothing.

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rpm

Commands
> rpm -Va > /tmp/rpmVa.log Shows status of rpm installed files

> rpm -qf [full_path] Find source binary package name

> rpm -Uvh --nodeps --force [package] Run from current dir containing the rpm file
Re-installs package

> rpm -qa Show everything installed on system.

> rpm -qi [package] Show information about package.

> rpm -q --whatrequires [package] Determine dependencies of package.

> rpm -e --test Do mock removal.

> rpm -e [package] Remove package.

> rpm --checksig [package] Remove package.

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up2date

Commands
> up2date [package] Red Hat package update tool.