I need a script to run daily at a particular time.

/etc/crontab would normally be the approach, but there is no cron tool (despite existence of /etc/cron.daily).

Documentation seems to suggest "alarmd" for this. The manual at http://maemo.org/api_refs/4.0/alarm-api/index.html is really just C code documentation. Where's the user documentation?

If I simply want to run do_something.sh at 1am every day, for example, what's the procedure?