On Thu, 24 Jun 2010 05:19:53 +0200 Thomas Keusch <fwd at bsd-solutions-duesseldorf.de> wrote: > tk at eternity:~$ b=5 > tk at eternity:~$ case "$b" in > > [0-9] ) > > echo numeric > > ;; > > * ) > > echo alpha > > ;; > > esac > numeric > tk at eternity:~$ > > Works for me. Now try it with 10.