http://www.perlmonks.org?node_id=1160671


in reply to Re^5: How to optimize a regex on a large file read line by line ?
in thread How to optimize a regex on a large file read line by line ?

You're welcome. I forgot to add that my hard drive is SSD, although this would NOT account for 11 minutes difference.

Update added missing negation, thanks ww

perl -ple'$_=reverse' <<<ti.xittelop@oivalf

Io ho capito... ma tu che hai detto?