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Short Information about loaded kernel modules

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

PulseAudio: set the volume via command line
If you have more than one SINK

Convert flv without re-encoding

Resets your MAC to a random MAC address to make you harder to find.
Next time you are leaching off of someone else's wifi use this command before you start your bittorrent ...for legitimate files only of course. It creates a hexidecimal string using md5sum from the first few lines of /dev/urandom and splices it into the proper MAC address format. Then it changes your MAC and resets your wireless (wlan0:0).

save date and time for each command in history
Date-time format: YYYY-MM-DD HH:MM:SS

Umount only the NFS related to 'string'
Sometimes, you have a lot of NFS in the server and you can't or shouldn't use umount -a. Whis this command, you only umount the fs related to the 'string'

floating point operations in shell scripts
Calculator for shell. Similar performance and basic usage as 'bc', but with more advanced features. Not installed on most systems by default.

Parse compressed apache error log file and show top errors
credit shall fall to this for non-gzipped version: https://gist.github.com/marcanuy/a08d5f2d9c19ba621399

A nice command for summarising repeated information


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