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#!/bin/perl
# first command deliberately generates an error....
...
print "ls Output:\n";
print `ls -l`;
print "ls Result: $?\n";

Rubbish Result: -1
ls Output:
...
-rwxr-xr-x 1 Userid Domain Users  351 Oct 30 10:48 test.pl
-rwxr-xr-x 1 Userid Domain Users  108 Oct 31 14:21 var.pl
ls Result: 0