Say your downloader times out after 3 min. 1. Use find to compile a list of files that have not changed: find /path/to -type f -mmin +3 > mylist.txt 2. Tell r

Say your downloader times out after 3 min. 1. Use find to compile a list of files that have not changed: find /path/to -type f -mmin +3 > mylist.txt 2. Tell rsync only to sync files on the list: rsync -a --files-from=mylist.txt /path/to remote:/backup 3. Homework: make sure it does not barf on strange filename.