Q: Crontab fails to save changes on the RAQ 550
One of the updates for the 550 implements an updated version of vi. Sadly, this will break the crontab functionality. (you are unable to save changed crontab files).
to fix this, you can use the pico editor to edit your crontab's, here are two examples;
1) fix it for the current session only
type; EDITOR="pico -w"
type; export EDITOR
done, now type crontab -e as ususal to edit your crontab.
2) fix it permanently
type; cp /usr/bin/pico /bin/vi
Nopw
you have overwritten the VI version with pico, and you have permanently
fixed the problem for all users. If you still want to use vi for other
tasks, you can use vim which is also present on your system.