Cron doesn't execute script until restarted

Question

I wrote a script to change my wallpaper, and placed it in /etc/cron.hourly.  It will not run on the hour, or any time, after starting my computer.  However, if I restart cron, then everything is fine.  run-parts indicates that it *should* run:
┌─[pearson@pearson-arch] - [~] - [Wed Apr 15, 06:33]
└─[$]> sudo run-parts --test /etc/cron.hourly
Password:
/etc/cron.hourly/adjtime
/etc/cron.hourly/rotate_background
┌─[pearson@pearson-arch] - [~] - [Wed Apr 15, 06:33]
└─[$]>
Just to make sure, cron *is* started on system boot.

Answer 1

thisllub wrote:What does the cron log say?
It doesn't mention it.
thisllub wrote:Arch seems to use run-cron not run parts.
Run-parts allows you to specify a certain folder to run; it has a --test option, which run-cron doesn't seem to have.
thisllub wrote:Does the script have executable permissions?
755, owned by root:root, which is the same as the other script in that folder (adjtime, which I think might be part of ntpd).
thisllub wrote:If a script runs as root user it may not have access to your desktop variables (not sure about this)
The odd thing is that it runs fine once I restart cron.  I was using /usr/bin/env in the hash-bang, though, so I've changed that, and I'll see if that changes anything.
thisllub wrote:Does it work if you install it from you own crontab?
I... don't really know how to do that yet.  I'll have to look it up and get back to you.