"service" command unavailable, cannot restart dropbear from command line

Installing and Using OpenWrt
1

I have created an unprivileged user for my ssh login, and he has access to root using sudo privileges.
I have changed some settings in dropbear in my ssh terminal. Now, I want to restart dropbear to activate the changes.

dan@MyRouter:~$ service dropbear restart
/etc/rc.common: /lib/functions/procd.sh: line 54: can't create /var/lock/procd_dropbear.lock: Permission denied

dan@MyRouter:~$ sudo service dropbear restart
sudo: service: command not found

Why is the service command not found when using sudo? How can I get the service command to work? How can I restart dropbear from the terminal?

2

you could try:

/etc/init.d/dropbear restart

If that doesn't work, let's see the output of:

ubus call system board
3

Also try:

sudo /sbin/service dropbear restart
sudo echo $PATH