Error on autostart if /etc/rc.local is missing

[Cyber1000]

• RPi zero (old version 1.3 with wlan-dongle)
• distro: dietpi (reduced raspbian-image)

Problem: /etc/rc.local is missing, install gives me this error (and pikrellcam doesn't start automatically)

grep: /etc/rc.local: No such file or directory
grep: /etc/rc.local: No such file or directory
Adding a pikrellcam autostart command to /etc/rc.local:
sed: can't read /etc/rc.local: No such file or directory
Added execute permission to /etc/rc.local
chmod: cannot access '/etc/rc.local': No such file or directory
grep: /etc/rc.local: No such file or directory

Creating an empty /etc/rc.local removes the errors, but file stays empty.

Proposal: create a systemd-file instead, since systemd is used by a lot of distros nowadays (or at least fix /etc/rc.local if it is missing, don't know for now if we just could create this file)

If I have never started pikrell before and navigating the web-interface I'm just getting "No preview jpeg" which jumps around (at least on chrome), I nearly can't click anything.

btw I also had to do a sudo usermod -aG video dietpi (the user is called dietpi and is missing from group video) to get video running

Thanks!

[Cyber1000]

Having looked around:

• /etc/rc.local is long time obsolete (though some distros have used it as fallback for many years)
• simple creating /etc/rc.local doesn't work here
• I'll have a look in systemd and I'll post result here

[Cyber1000]

Following works:

• /etc/systemd/system/pikrellcam.service

[Unit]
Description = PiKrellCam

[Service]
User = dietpi
Group = dietpi
Type = simple
ExecStart = pikrellcam
Restart = always
RestartSec = 15

[Install]
WantedBy = multi-user.target

• systemctl enable pikrellcam
• reboot computer

I don't know if using of /etc/rc.local has any special meaning here (for example old OSes), so I didn't make a PR so far.
Let me know if I can help adjusting the install file ...