#!/bin/bash
## by Eugene Reimer 1998-Feb;
sed 's|.*|\L&|'


exit
was originally:  tr A-Z a-z
in order to support non-ASCII charset, eg: umlauted-vowels for Deutsch, etc, abandoned the use of tr and went to sed;
tr lacks multichar (utf8) support;  sed has such support;  see also support for the [:lower:] and [:upper:] POSIX-character-classes;
was called trlower, but have revised all scripts trlower-->tolower;