====== Ubuntu ====== Small tips to hopefully make your life easier. Anything in a code block should be run on the command line. ==== Is package 'x' installed? ==== $ dpkg -l | grep gnome-terminal ii gnome-terminal 3.6.2-0ubuntu1 amd64 GNOME terminal emulator application ii gnome-terminal-data 3.6.2-0ubuntu1 all Data files for the GNOME terminal emulator As we can see from the above output, the package is installed. $ dpkg -l | grep foobarbaz $ No output in this case means that grep could not find package or description that matched your search query.