LowerIt

#!/bin/bash
##
## "LowerIt"
##
## Original code found here:  http://www.linuxjournal.com/content/convert-filenames-lowercase ;  though this looks nothing like it.
## Modified by Maiya78 to change directory names, to work recursively, and to support unicode filenames on GNU systems.  I also copyedited the comments.  :3
##
## From the current directory, recursively convert to lower case all file and directory names
## Should ask for verification before overwriting an existing file.
##
## ------------------------------------------------------------------------------------------------------------

## Clean up aliases
unset pwd && unset export && unset cd && unset echo && unset sed && unset mv
## Make sure we're in the right directory
export strStartDir=$(pwd)
cd $strStartDir

## Write in a function the loop that we'll use for to edit the files
function editingloop {
    if [[ -d $strDir ]]; then
        cd $strDir
        ## Check to make sure current directory isn't empty
#        if [[ $(echo $strDir/*) != $(echo $strDir'/*') ]]; then  ## Doesn't seem to be working.  :\
            echo "
_______________________________________________________________________
Entering current directory:  "$strDir
            echo ''
            echo "Current directory before edit:  " && echo $strDir/* | sed 's/ /\n/g' | sed 's!.*/!!' | tr '\r\n' ' '
            ## Start the editing loop
            for strItem in $(ls -a); do
                ## Save the computer some breath on . and ..
#                if [[ $strItem != '.' || '..' ]]; then  ## Doesn't seem to be working.  :\
                    ## Set a variable equal to the lowercased vesion of the original filename
                    strLowerCasedItem=$(echo $strItem | sed 's/[[:upper:]]*/\L&/')
                    ## If this variable is the same as the original, then the original was already lowercased, so we skip it.
                    if [[ $strLowerCasedItem != $strItem ]]; then
                        mv -i $(echo $strDir'/'$strItem) $(echo $strDir'/'$strLowerCasedItem)  ## '-i' makes sure that we check the user before clobbering
                    fi
#                fi
            done
            echo '
'
            echo "Current directory after edit:  " && echo $strDir/* | sed 's/ /\n/g' | sed 's!.*/!!' | tr '\r\n' ' '
            echo ''
#        fi
    fi
}

## Lowercase all items in the starting directory
editingloop

## This loops the main loop through each subdirectory of the starting directory
for strDir in $(echo $strStartDir/*); do
editingloop
done

exit 0