Plan 9 from User Space's /usr/local/plan9/lp/sched/FIFO 

#!/usr/local/plan9/bin/rc
9 ls -ptr $* | 9 sed -n -e '/^[0-9][0-9]*\.[1-9][0-9]*$/p'

Space Glenda

Copyright © 2005 Lucent Technologies, Russ Cox, MIT.
See license for details.