Use of uninitialized value complaint

[deb]

I need help understanding why I'm getting this complaint,

Use of uninitialized value in concatenation (.) or string at test.pl line 2.

It says its unitialized, but isn't the my $status initializing the scalar?  
I'm so confused.

Here's the code:


#!/usr/local/bin/perl -w
my $status = `ps -ef | /bin/egrep '/usr/lib/sendmail' | /bin/grep -v grep | awk 
'{print $2}'`;
print $status;
if ($status) {
   print "We have sendmail\n";
} else { 
   print "We don't\n";
}

And the output:

Use of uninitialized value in concatenation (.) or string at test.pl line 2.
    root 19460     1  0   Dec 18 ?        0:08 /usr/lib/sendmail -bd -q15m
We have sendmail


Thanks for any help,

deb

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