Commands using e2fsck (2)

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Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously

Optimize PDF documents

Tells which group you DON'T belong to (opposite of command "groups") --- uses sed
special thanks to XwZ :)

awk change field separator
GNU Awk 3.1.4

To have only unique lines in a file

Phrack 66 is out, but the .tar.gz is not there yet on phrack.org's website
Nice reading in the morning on the way to work, but sadly the .tar.gz for the whole issue 66 is not on phrack's website yet. So use wget to download.

list files recursively by size

colorize your svn diff
Will colorize your svn diff.

Fetch the current human population of Earth

Remove all unused kernels with apt-get
Remove old kernels (*-generic and *-generic-pae) via apt-get on debian/ubuntu based systems. Tested on ubuntu 10.04 - 12.04.

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