Mastering dpkg

Debian GNU/Linux package manager is very cozy tool to manage applications on your system.
Here are the tips of useful commands of "dpkg".

// Search the package
$dpkg -l 'firefox*'

//Search installed package
$dpkg -l | grep firerox

//List up the files install by the package
$dpkg -L firefox

//Search the package from the specific file
$dpkg -S mozilla-firefox.png

//Aquire the complete information of the package
$dpkg -s firefox

Those commands are often needed but often forgotten...