You're confusing grep() with UNIX's grep utility. check out perldoc -f grep, and you will see. You're also slurping <FILE>...

Here's another way to do it... 

while( <FILE> ) {
   if( my $pos = index( $_, '--foo' ) ) {
      $pos += 5;
      print substr( $_, $pos, length($_) - $pos );
   }
}

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In reply to Re: Array Search by lestrrat
in thread Array Search by IPstacks

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