LinuxQuestions.org - Remove old folders scheduly

in order, I want to remove old folders via timestamp in ftp, found this script :

Code:

    #!/bin/bash

# Shell script to remove whole (nuke) ftp directory structure  

# See url for more info:

# http://www.cyberciti.biz/tips/how-to-nuke-a-ftp-server.html

# -----------------------------------------------

# Copyright (c) 2006 nixCraft project <http://cyberciti.biz/fb/>

# This script is licensed under GNU GPL version 2.0 or above

# -------------------------------------------------------------------------

# This script is part of nixCraft shell script collection (NSSC)

# Visit http://bash.cyberciti.biz/ for more information.

# -------------------------------------------------------------------------

# NOTE: Requires ncftp/ncftlls ftp clients/commands

# =========================================================================

# Ftp server settings 



### change me ###############################

# ftp login user

FUSER='---'FUSER='example' 



# ftp password

FPASSWD='password' 



# ftp server ip/name 

FTPS='----='-----'



# ftp dirs to nuke Separate multiple dirs using

# a blank/white space i.e. /dir1 /dir2)

FTPDIRS='/dir1 /dir2'

##############################################

for d in $FTPDIRS

do

 subdires="$(ncftpls -u $FUSER -p $FPASSWD  ftp://${FTPS}/${d}/)"

 for dir in $subdires

 do

 rdir="${d}/${dir}"

ncftp -u"$FUSER" -p"$FPASSWD" $FTPS<<EOF

 cd $rdir

 rm *

 rmdir $rdir

 quit

 EOF

  done

 done

 # end of script

but it doesn't check the time. is there any script to remove folders by days?
thanks