user@host:~$ perl perlfunc.exit.pl
calling system
called sleeping 1 at perlfunc.exit.pl line 4.
called sleeping 2 at perlfunc.exit.pl line 4.
called sleeping 3 at perlfunc.exit.pl line 4.
called sleeping 4 at perlfunc.exit.pl line 4.
called Program interrupted ..

 exit_val 2 at perlfunc.exit.pl line 14.
user@host:~$
user@host:~$