Shell Programming and Scripting

for f in `find $1 -type d`; do
echo $f
g=`expr "$f" : '\(.*\)' | tr '[A-Z]' '[a-z]'`
mv "$f" "$g"
done

g=`expr "$f" : '\(.*\)' | tr '[A-Z]' '[a-z]'`

g=$(echo "$f" | tr [A-Z] [a-z])

#!/bin/sh

cat /dev/null > tmp
for f in $(find -type d); do
  echo "$f" >> tmp
done

cat /dev/null > tmp2
while read line; do
  depth=$(echo "$line" | grep -o "/" | wc -l)
  echo "$depth|$line" >> tmp2
done < tmp

sort -nr tmp2 > tmp
while read line; do
  folder=$(echo "$line" | cut -d'|' -f2)
    parent=${folder%/*}
    child=$(echo ${folder##*/} | tr [A-Z] [a-z])
  newfolder=$(echo "$parent/$child")
  echo mv "$folder" "$newfolder"
done < tmp

exit 0

#!/bin/bash

MYNAME=$0
FROM=$1
TO=$2

function list(){
# lists all directories on the current level
for f in `find ./ -type d`; do echo $f; done | cut -d / -f 1,2 | uniq | tail -n +2
}

function rename(){
# renames all directories on this level
# then calls "stepin" which moves on directorylevel deeper
for l in `list`
    do
    n=`echo $l | sed "s/${FROM}/${TO}/g"`
    if [ "$l" != "$n" ];then
        echo "RENAMING:        " $l " --> " $n
        mv $l $n
        echo ""
    fi
done
stepin
}

function stepin(){
# lists all directories on the current level to "cd" into them
# from here "one level deeper" rename does his job again
echo "stepping in..."
#for s in `list`; do echo "next dir is: "$s "it contains"; ls -l $s; done
for s in `list`; do echo "next dir is: "$s "it contains"; ls -l $s; cd $s; rename; done
}

echo "OLD"; list; echo "OLD_END"
rename
echo "NEW"; list; echo "NEW_END"

#At the top of the script
CURRDIR="$PWD"

#your script....

for s in `list`; do echo "next dir is: "$s "it contains"; ls -l $s; cd $s; rename; done; 
cd ..
#Do not go back more than the working directory
if [ "$PWD" = "$CURRDIR" ]; then exit 0; fi