examples/functions/lowercase

   1 #! /bin/bash
   2 #
   3 # original from
   4 # @(#) lowercase.ksh 1.0 92/10/08
   5 # 92/10/08 john h. dubois iii (john@armory.com)
   6 #
   7 # conversion to bash v2 syntax done by Chet Ramey
   8
   9 lowercase()
  10 {
  11         for file; do
  12                 [ -f "$file" ] || continue
  13                 filename=${file##*/}
  14                 case "$file" in
  15                 */*)    dirname=${file%/*} ;;
  16                 *) dirname=.;;
  17                 esac
  18                 nf=$(echo $filename | tr A-Z a-z)
  19                 newname="${dirname}/${nf}"
  20                 if [ "$nf" != "$filename" ]; then
  21                         mv "$file" "$newname"
  22                         echo "lowercase: $file -> $newname"
  23                 else
  24                         echo "lowercase: $file not changed."
  25                 fi
  26         done
  27 }