Davvid Forrai writes:

> I used the TERM variable to determine whether it was interactive (i.e.
> if TERM is set, sh is interactive).
> 
> I'm wondering if there's a better or more elegant solution to make this
> determination.

You can use test(1) to find out if standard input or standard output
is a tty:

     -t file_descriptor
                   True if the file whose file descriptor number is
                   file_descriptor is open and is associated with a terminal.

For years my .profile and .kshrc have tested standard output.
Standard input would seem to make more sense, but it was many years
ago that I set this up, so I don't know if there is a reason I test
standard output or not.

if [ -t 1 ]
then
    # interactive stuff
    # ...
fi

Regards,

Giles