Script to download files in an XML String

We need a Bash script written to do the following Using a schedule (CRON) Parse\Read the tags in an XML feed, locate all the files listed in the <FileName> tags (there could be one or many). If the files do not exist in a folder, download them to a specific folder. Then create\apend a Playlist file (plain text) with the file names that were downloaded. If the New Playlist contains files not in the old playlist - replace the old playlist with new one. If the Playlist is new, terminate an application and relaunch using the new playlist the XLM is We have a secured with a username and password. The FTP site where the files will be retrieved is also secured behind a username\password. XML poll is HTTPS FTP download will be done via Sftp