I have this cronjob set :

```
* * * * * /usr/bin/systemctl suspend

```

And it is not working. But I can run it in a shell and it works. I don't understand what could be not working.

**EDIT**
Redirecting error output to `/tmp/error` gives this :

```
Failed to issue method call: Access denied
Failed to issue method call: Access denied

```

My question is then : Are cronjobs run as a special user (`cron` for example), which would explain that my user can run the command, but not `cron` itself?

Additional explanation :

* This is a minimal example to show a problem I have in a script (that makes more sense than the single command provided here)
* `systemctl` is part of `systemd`. I think reboot, shutdown, suspend are working with a non-root user with `systemd`. Anyway, it is working on my system.
* Finally, I use Arch Linux and `/bin`, `/usr/sbin`, `/sbin` are all symlinks to `/usr/bin`.