$ perl -le " print scalar gmtime( ( stat shift )[9] ) " Thu Jan 1 00:00:00 1970 $ perl -le " print scalar gmtime( ( stat shift )[9] ) " . Tue Sep 15 07:20:27 2015 $ perl -le " print scalar gmtime( ( stat shift )[9] ) " .. Fri May 29 06:13:23 2009 $ perl -le "use Path::Tiny; print scalar gmtime( path( shift )->stat->mtime ) " Path::Tiny paths require defined, positive-length parts at -e line 1. $ perl -le "use Path::Tiny; print scalar gmtime( path( shift )->stat->mtime ) " . Tue Sep 15 07:20:27 2015 $ perl -le "use Path::Tiny; print scalar gmtime( path( shift )->stat->mtime ) " .. Fri May 29 06:13:23 2009