I wanted to setup a simple shell script "test3" with some
commands inside.  I started the script with   When I call the
script I got the error:  : bad interpreter: No such file or
directorybin/bash  Hmm, why is there no such file ?  If I type
at the shell:  echo $SHELL  then I got the reply:   Moreover
/bin/bash exists!!  So how do I setup a shell script otherwise?
Am I forced to append a ".sh" extension?