Not really a switch, but what about BEGIN? This should work, the first param is the argument. 
perl-ne 'BEGIN {$arg = shift} split(/,/);if ($_[7] eq $arg){$cnt++;}EN
+D{print "There are $cnt things in this file\n";}' arg file_name.txt

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Boris

In reply to Re: perl command line arguments by borisz
in thread perl command line arguments by jluther

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