Very Computer

Is there any problem with using a #!/bin/sh script as a login shell (i.e., in
the passwd file) for a user account.  I'd like the user to be able to access
various applications from the shell script and be logged off after
terminating the script.

This is not an attempt at a security measure.  Escape to a unix prompt from
the script is not a problem, although it should'n happen accidentallly.