On Fri, 2004-05-07 at 10:53:01 +0200, Christoph Kukulies proclaimed... > Strange: I was used to do upper case lower case conversion always like this > and it suddenly doesn't work anymore: > > $ echo Z | tr "[A-Z]" "[a-z]" Works fine for me. However, maybe this would help? echo Z | tr [:upper:] [:lower:] -vxla