Re: root crontab @reboot for loop fails

[Greg Wooledge <greg@wooledge.org>]

On Sat, Jul 16, 2022 at 08:13:56AM +0100, Tixy wrote:
> On Sat, 2022-07-16 at 05:30 +0100, Gareth Evans wrote:
> > I was of the impression (which I think it is fair to say has been created) that systemd had done away with /etc/rc.local
> 
> rc.local is still run on the latest Debian stable. You need to make
> sure it's a proper executable, i.e. starts with a shebang like
> '#!/bin/sh' and the file has execute permissions.

Correct.  You can also see its systemd unit:

unicorn:~$ systemctl status rc-local
● rc-local.service - /etc/rc.local Compatibility
     Loaded: loaded (/lib/systemd/system/rc-local.service; static)
    Drop-In: /lib/systemd/system/rc-local.service.d
             └─debian.conf
     Active: inactive (dead)
       Docs: man:systemd-rc-local-generator(8)

unicorn:~$ systemctl cat rc-local
# /lib/systemd/system/rc-local.service
[...]
[Unit]
Description=/etc/rc.local Compatibility
Documentation=man:systemd-rc-local-generator(8)
ConditionFileIsExecutable=/etc/rc.local
After=network.target

[Service]
Type=forking
ExecStart=/etc/rc.local start
[...]

I'm not using one on this particular computer, hence "inactive (dead)".
Note also the Debian changes at the end of the unit file (or in the
separate Drop-In literal file if you aren't using "systemctl cat").