Any reason NOT to do a small search for 'hide guest ssid' and find this yourself?
Every forum has a search functionality and it need to be used FIRST, before posting the same question again and again...
service restart_wireless
you can also restart the wireless service by issuing
It will probably be faster than using the GUI, since you are already using SSH.
And only use nvram commit if you want/need to make this persistent across reboots and do not want to put that in an init-script. Otherwise you are wasting one of a finite number of write operations the nvram can handle in its lifetime (don't know how many, but read about being careful and try to avoid unnecessary commits many times)
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