How to trap !sh at keyboard

[Josh Miller]

Billy Davis wrote:
> It seems that some of  our users are inclined to key in '!sh' at the 
> shell prompt, which promptly shuts down our Red Hat Enterprise 3 Server, 
> interrupting everyone else's work.  Is there a line that we can add to 
> the inittab file, that will trap this string, in the same fashion that 
> the 'ca::ctrlaltdel:/sbin/shutdown -t3 -r now' line traps 
> Ctrl-Alt-Delete inputs?

Haha, is this a joke to get people to try it out and shut down their 
machines?  I actually tried it on a test-host, not believing you and not 
realizing that it would execute the last command that began with sh, 
which did happen to be 'shutdown -r now'.

Thanks for the laugh on a Friday afternoon :)

Josh, RHCE