Not quite sure that you are trying to do, but in Perl, $0 normally means the name of the executing program, 
#!/usr/bin/perl
use warnings;
use strict;

print "$0\n";
__END__
prints:
C:\TEMP\dollar0.pl

[download]
If you try to open $0 for writing, this will cause some problems! Maybe you are trying to get the command line args to your program and there are ways to do that. Update: I recommend using "warnings" and "strict" as I have shown above.

In reply to Re: McAfee False Positive by Marshall
in thread McAfee False Positive by SavannahLion

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