Reboot on openHab 3

This is not permissions issue as I tested the permissions with by

sudo -u openhab /bin/bash
sudo shutdown -r

As @rpwong suggested and it worked.

I added print of the output:

    var String output = executeCommandLine("sudo","reboot")
    logInfo("Flag_System", "executeCommandLine output " + output)

And got “null”

Output:

2021-03-31 20:58:37.100 [INFO ] [penhab.core.model.script.Flag_System] - executeCommandLine output null