nginx and memcache - Ubuntu 10.14

I am trying to secure the memcache port as described in a few articles I have come across by

"On my CentOS box, I can do this by simply editing the

/etc/sysconfig/memcached

file, changing the line

OPTIONS=""

to

OPTIONS="-l 127.0.0.1"

"

But I am on an Ubunto 10.14 box and can not find that file. All the memcached files I did find do not have that OPTIONS="" option to edit. Does anyone know where I can find this mystery file?

Thanks,

Dave