readlink for better scripting

Fritz Thomas solves a common shell scripting problem for me: finding where your script lives. This script saved as ~/bin/x:

#!/bin/bash
echo "$0"
readlink -f "$0"

With ~/bin in PATH produces:

$ cd ~/bin; ./x
./x
/home/where/the/heart/is/bin/x
$ cd; x
/home/where/the/heart/is/bin/x
/home/where/the/heart/is/bin/x

Just what I need! (Yes, quite an odd home directory.)

Do note the caveats for readlink(1).