/tmp>gzip -9 < 11109869.pl > 11109869.pl.gz
/tmp>lzma -9 < 11109869.pl > 11109869.pl.lzma
/tmp>bzip2 -9 < 11109869.pl > 11109869.pl.bz2
/tmp>dir 11109869.pl*
-rw-r--r-- 1 alex users 13999 Dec  9 23:01 11109869.pl
-rw-r--r-- 1 alex users  4110 Dec  9 23:02 11109869.pl.bz2
-rw-r--r-- 1 alex users  4296 Dec  9 23:02 11109869.pl.gz
-rw-r--r-- 1 alex users  4099 Dec  9 23:02 11109869.pl.lzma
/tmp>