perhaps start over - it seems this is now a mess …
I had no problem following the wiki - but I detail here where and why I amended it.
first create the udev rule:
sudo nano /etc/udev/rules.d/99-wacom.rules
put the contents in
(you need sudo
for this because you want this file to be in /etc/…
this is the only command that needs sudo/root rights - all of the rest should not be run as root!)
create the directory because it initially does not exist
mkdir -p ~/.config/systemd/user
then you can save the wacom.service unit file to it:
nano ~/.config/systemd/user/wacom.service
put the contents in and save
(I did not amend the
ExecStart=*/path/to/wacom-config.sh*
I just copy pasted and left it as it was - this you should fix)
once again create a directory which does not exist by default (perhaps you already have it though)
mkdir -p ~/.local/bin
Why?
Because this directory is in your default $PATH
echo $PATH
will show you
create the wacom-config.sh
in that location:
nano ~/.local/bin/wacom-config.sh
put the content in and save
then, make that script executable:
chmod +x ~/.local/bin/wacom-config.sh
Now you can enable the service:
systemctl --user enable wacom.service
I did all that in exactly that way and got no error.
HTH