Sometimes one-liners are so cool, you just want to remember them. And good one-liners can also teach you the intricacies and features of the [[Bash]] shell. Although there are better sites on the Internet for [http://www.bashoneliners.com/ finding one-liners], [http://www.catonmat.net/series/bash-one-liners-explained understanding one-liners] or [http://uni.xkcd.com/ playing on the command line], we'd still like to illustrate a few here.
== Find big files or directories ==
Help! I'm out of disc space. How do I find out where the big files or directories are that are consuming all storage?
<source lang="bash">du -cks -- * | sort -rn | head</source>
<code>du --total --block-size=1K --summarize</code> and the double dash argument means 'take the arguments from STDIN' then the asterisk is the glob character that matches 'everything in this directory', so each file and directory in the current working directory is summarized. This is the piped to <code>sort</code> with the reverse, numeric options and then piped to <code>head</code> for showing just the top 10. Adjust to taste.
== Mount remote filesystem ==