Debian
From Linuxintro
Installing software
To search for and install software using a comfortable gui, use
synaptic
To install software from the repositories in the command line, use
apt-get install mysql-server
This installs mysql-server. To install debian software packages from your harddisk, use dpkg. To search for software using the command line:
apt-cache search mysql-server
Searches for mysql-server in the repositories.
taboo a package
echo package hold | dpkg --set-selections
convert rpm to deb
alien --to-deb 123.rpm