Author: Stan Eisenstat
Subject: Re: [Cs323] Output of sh
Date: Sunday, 18 Oct 2020, 07:30:45

    > Message Posted By: Unknown
    >
    > Even when I run the script using '/c/cs323/Hwk3/mcBash', when I input '$0'
    > I get '/home/classes/cs323/.bin/mcBash.xx'. Are we expected to output a
    > similar path? If so, where did this path come from? Specifically the
    > '.bin' and 'mcBash.xx' part.

bash sets $0 to the name of the program being run.
mcBash replaces $0 by that name.
		    
But Hwk3/mcBash is not a Perl script but a setgid C
program that runs the real mcBash from a directory that
is only accessible by members of the group cs323ta,
whence the /c/cs323/.bin/mcBash.xx.

To avoid any confusion, I modified Hwk3/mcBash to
reset $0 to /c/cs323/Hwk3/mcBash.

--Stan-