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Compare two files side-by-side
I found out about this from Unix Power Tools, and thought it was pretty useful. Use the -w option to change the width of the output, and the -s option to suppress lines that are the same in both files.

uniq for unsorted data

convert all files in a dir of a certain type to flv
This converts all m4a files in a dir to flv. You can just swap the m4a bit to anything else ffmpeg supports though, and it'll work.

HDD Performance Write Test
Test your XFS filesystem and Raptor hard drives for write performance.

Jump to line X in file in Nano.
Starts the cursor on line X of file foo. Useful for longer files in which it takes a long time to scroll. If X is greater than the number of lines in file foo, it will go to the last existing line.

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

Kill any process with one command using program name
Somtime one wants to kill process not by name of executable, but by a parameter name. In such cases killall is not suitable method.

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

Configuring proxy client on terminal

List docker volumes by container


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