Seeing that using the search in this forum yields nothing for ser2net, I thought I would share the following:
to use ser2net, it's seems you must start is using the command: (perhaps I need to update my $PATH)
/usr/sbin/ser2net
But to add to that, the .conf file does not exist when you install ser2net, so you need to add one. Because I am new, and yet to learn how ideally to place files, I placed the .conf file here:
/home/tc
because what I'm doing with arduino needs to happen when the computer is booted, I updated bootlocal.sh with the following:
/usr/sbin/ser2net -c /home/tc/ser2net.conf
.filetool already saves the home folder, so I figured what better place to put the .conf file.
After that, I performed a backup, rebooted, and without SSH'ing back into the unit, I went into puTTY on my laptop and entered in the pertinents to the microCore box, and the output from the arduino was displayed. Awesome!
microCore is installed on a HP thin client with 128MB RAM, and even with all the junk I need, it only takes 70MB RAM with services running.
you can find the ser2net.conf examples on the net, but mine is just here and just one line:
2738:raw:0:/dev/ttyUSB0:9600