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Url Encode
Returns URL Encoded string from input ($1).

List contents of jar
useful to find the list of dependencies

Extracting a range of pages from a PDF, using GhostScript
In this example we extract pages 14-17

Colorize make, gcc, and diff output
Colorize output of make, gcc/g++ or diff, making it easier to read at a glance. They are not distributed with make, diff or gcc, but are usually available in the repositories.

Perl oneliner to print access rights in octal format
This prints file access rights in octal - useful when "stat" is unavailable.

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

Blacklist usb storage
Some times you may ban usb to protect thefting of your personal data. Blacklist the usb_storage module by adding blacklist usb_storage to /etc/modprobe.d/blacklist.conf. To load the module manually, $sudo modprobe usb_storage.

Quickly graph a list of numbers
Useful when you've produced a large file of numbers, and want to quickly see the distribution. The value of y halfway along the x axis is the median. Simple! Just create the listOfNumbers.txt file with a number on each line to try it out.

Show crontabs for all users
added echo "### Crontabs for $user ####"; to make clear whose crontab is listed.

seq can produce the same thing as Perl's ... operator.
Optionally, one can use {1..50} instead of seq. E.g. for i in {1..50} ; do echo Iteration $i ; done


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