Commands using cd (215)

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open a seperate konsole tab and ssh to each of N servers (konsole 4.2+)
creates a new tab for each of N servers in listofservers.txt and ssh's to said servers then, try the "send to all sessions" feature of konsole to do the same work on all servers at the same time. BIG time saver, but be careful!

Convert mp3/wav file to asterisk ulaw for music on hold (moh)

Move all but the newest 100 emails to a gzipped archive

Show Apt/Dpkg configuration
Shows all configurations to apt and dpkg, rarely changed, you probably still have the default configuration. Go ahead and explore your configuration if you dare, perhaps change your apt-cache directory, Dir::Cache "var/cache/apt/"; or the names of the log files.

print a python-script (or any other code) with syntax-highlighting and no loss of indentation

Simulate slow network connection locally
Replace 500ms by the desired delay. To remove it: sudo tc qdisc del dev lo root netem delay 500ms

Empty a file
For when you want to flush all content from a file without removing it (hat-tip to Marc Kilgus).

Remove all zero size files from current directory (not recursive)

Matrix Style
I like the fact the Patola's version uses only ones and zeros, but I also like the sparse output of the other versions. This one combines both of those features and eliminates some unnecessary cruft. You can vary the sparseness by changing "$(($RANDOM % 5))" to another number. The number in this term "$(($RANDOM % 4))" controls how frequently the numbers are output bold.

create a new script, automatically populating the shebang line, editing the script, and making it executable.
The first argument is the interpreter for your script, the second argument is the name of the script to create.


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