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List only directories, one per line

check open ports without netstat or lsof

Simple word scramble
enlubtsqyuse $ cat /tmp/out subsequently

Insert the last argument of the previous command
for example if you did a: $ ls -la /bin/ls then $ ls !$ is equivalent to doing a $ ls /bin/ls

Watch memcache traffic
View all memcache traffic

Erase empty files
The command find search commands with size zero and erase them.

Random numbers with Ruby
There's been a few times I've needed to create random numbers. Although I've done so in PERL, I've found Ruby is actually faster. This script generates 20 random "10" digit number NOT A RANDOM NUMBER. Replace 20 (1..20) with the amount of random numbers you need generated

Quick syntax highlighting with multiple output formats
You can specify various output formats, theme styles, etc. $ python -m pygments -o source.png source.py $ python -m pygments -o source.rtf source.py Check available output formats, styles, etc.: $ python -m pygments -L Find pygments module here: http://pygments.org/

pimp text output e.g. "Linux rocks!" to look nice

Start dd and show progress every X seconds


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