Great article! I would just like to point out - if you are working with servers that are not under your control and plan to use rsync with --delete option, make sure that they store the same data. In case one of them stores only new data and deletes the one already synced, it might be a catastrophe if you use --delete option.
Awesome article, thanks!
I will just add a bit more stuff, in case anyone wants to know more.
Running the script with ./despace will only work if it is in your current directory. For avoiding this, you can run it using the full pathname.
If you are interesting in learning more, check out more articles here or on tldp.org.
Have fun!