login shell

[Bill Hassell]

One very important feature that your menu script (as well as 8every* shell script) must have is line #1 with the interpreter listed. If you write the script in ksh, then line 1 must be:

#!/usr/bin/ksh

Or if you use the POSIX shell: #!/usr/bin/sh

And of course the script must be executable by all the users, typically 755 (never 777) permissions.

What will happen at login is that the menu script will be run and any attempt to exit the script returns to another login request. Make sure your script does not provide a menu item for vi or other program that allows the user to call a shell (using the ! character). Just to be sure, you can set the SHELL variable in your script:

export SHELL=/usr/bin/false