Example:
#!/bin/sh
# What follows will be interpreted as a Borne shell, regardless
# of the shell it was started from.
#!/bin/csh
# What follows will be interpreted as a C-shell script, regardless
# of the shell it was started from.
#!/bin/awk
# What follows will be interpreted as an awk script
#!/usr/bin/perl
# What follows will be interpreted as a Perl script.
etc. etc.
This talk aims at users (rather than system managers), so shell of choice is C-shell 'csh' or its direct derivative 'tcsh', rather than 'sh' or 'bash'. |