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If you ever need to perform operations relative to the path of a shell script, the following snippet should be useful:

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

This will give you the absolute path to the script in most cases (see this...

If you're a programmer, you might know what a hashbang (also known as a shebang) is – a shellscript might, for instance, start with the hashbang #!/bin/sh on the first line, which includes an absolute path to the sh interpreter. But what do hashbangs...