Commands using ispell (1)

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list block devices
Shows all block devices in a tree with descruptions of what they are.

Inverted cowsay
It's quite fun to invert text using "flip.pl" (ref: http://ubuntuforums.org/showthread.php?t=2078323 ). Slightly more challenging is to flip a whole "cowsay". :-)

Find unused IPs on a given subnet

sleep until X o'clock
pauses exactly long enough to wake at the top of the hour

Get current Xorg resolution via xrandr
Not sure if it works the same on any shell.

Open (in vim) all modified files in a git repository
The option --porcelain makes the output of git easier to parse. This one-liner may not work if there is a space in the modified file name.

Youtube-dl gone stale on you/stopped working (Ubuntu)?
If you update youtube-dl from the repos, it becomes out-of-date quickly. Luckily, it can auto-update.

Slow down IO heavy process
Some IO intensive process make the system unresponsive. This function periodically starts/stops a process, which hopefully releases some resources for other activities. This function is useful when ionice is not available

Rips CDs (Playstation, etc.) and names the files the same as the volume name

tail: watch a filelog
-f file(s) to be monitorized -n number of last line to be printed on the screen in this example, the content of two files are displayed


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