#!/bin/sh
#
## -------- convert upper to lower case ---------
 
ls * | while read f
do
  if [ -f $f ]; then
    if [ "$f" != "`echo \"$f\" | tr A-Z a-z`" ]; then
      #Note that 'This' will overwrite 'this'!
      mv -iv "$f" "`echo \"$f\" | tr A-Z a-z`"
    fi
  fi
done

 ## eof