[{ALLOW view All}]
[{ALLOW edit Authenticated}]
!Apt

!Maintenance
{{{
apt update
apt upgrade
apt dist-upgrade or apt full-upgrade
apt autoremove
shutdown -r now
}}}
Restart note: [Netcup SCP|https://www.servercontrolpanel.de/SCP/Home] > Server > Steuerung > Garantierter Neustart

You can replace apt-get with aptitude

Source package list under
{{{
/etc/apt/sources.list
/etc/apt/sources.list.d
}}}

example: /usr/share/doc/apt/examples/sources.list
{{{
# See sources.list(5) for more information, especialy
# Remember that you can only use http, ftp or file URIs
# CDROMs are managed through the apt-cdrom tool.
deb http://http.us.debian.org/debian stable main contrib non-free
deb http://security.debian.org stable/updates main contrib non-free

# Uncomment if you want the apt-get source function to work
#deb-src http://http.us.debian.org/debian stable main contrib non-free
#deb-src http://security.debian.org stable/updates main contrib non-free
}}}
deb http://debian-multimedia.org stable main

[Backports|https://help.ubuntu.com/community/UbuntuBackports] packages
{{{
deb http://archive.ubuntu.com/ubuntu lucid-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu lucid-backports main restricted universe multiverse
}}}

Seach
{{{
apt-cache search <package>
}}}

Update package list
{{{
apt-get clean
apt-get update
}}}

Update all installed packages: 
{{{
aptitude dist-upgrade
apt-get dist-upgrade
}}}

Deinstall
{{{
apt-get remove <package>
apt-get autoremove openjdk-6-jdk
}}}

Check installed packages:\\
[http://www.cyberciti.biz/tips/linux-debian-package-management-cheat-sheet.html]
{{{dpkg -l
dpkg -l '*apache*'
}}}