http://www.fmi.uni-passau.de/archive/doc/unix/unixhelp/Unixhelp/scrpt_scrpt2.8.op.html (Einblicke ins Internet, 10/1995)You can use the following options either on the command line or with the built-in set command within a shell script to help you when debugging.
-e in non-interactive mode, exit immediatelyif a command fails.
-v print shell input lines as they are read.
-n read commands but do not execute them.