I recently gave Debian a try and one thing that surprised me, coming from Arch, is that the tool to install software, apt-get, can't list what software has already been installed. You have to use dkpg to get that information.<p>Even funnier, I found the answer for that on the Arch Wiki page on Pacmac Rosetta:<p><a href="https://wiki.archlinux.org/index.php/Pacman_Rosetta" rel="nofollow">https://wiki.archlinux.org/index.php/Pacman_Rosetta</a>