Baldur:~/devel$ cat << ! > /usr/local/bin/stoptst
> #!/bin/sh
> if [ $0 = 'stoptst' ]; then echo "Yep."; fi
> Baldur:~/devel$ chmod +x /usr/local/bin/stoptst
> [ Ctrl-D ]
Baldur:~/devel$ stoptst
Baldur:~/devel$ cd /usr/local/bin/
Baldur:/usr/local/bin$ stoptst
Baldur:/usr/local/bin$ ./stoptst
Baldur:/usr/local/bin$