I think you are trying to run a command which it's not in the system path. So try to run:
to find out where this file is. If you get several options, try to run the full-qualifed one. For this, copy the line with the path and file name and launch it. If you don't get the right output, you might need to update the file's database by running as root:
Afterwards, repeat the first step again.
There should also be possible to restart the service by running (as root):
/sbin/service <name_of_service> start
You can find out the name of the service having a look at /etc/init.d/ directory
I don't know if my help will be useful, but it's the most I can do.