Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/vg_mail-lv_var 94959436 1415576 88713448 2% /var #### #!/usr/bin/env perl use strict; use warnings; my @df = `df -P /var`; my ($used, $free) = (split (/\s+/, $df[1]))[2,3]; print "used $used, free $free\n";