The Art of Command Line
vimdiff can be quite cool when combined with <() bash feature (which presents command output as file).<p>e.g. see color difference of installed packages on local and remote server<p><pre><code>    vimdiff <( dpkg -l | grep -w ii | awk '{print $2}' | sort -V ) <( ssh REMOTE_SERVER dpkg -l | grep -w ii | awk '{print $2}' | sort -V )</code></pre>