cannot patch VPN Client

I downloaded the file vpnclient-linux-x86_64- and the patch 4.8.02-64bit.patch
When i try to apply the patch I get this error:

patch <…/4.8.02-64bit.patch
bash: patch: command not found

I’m in the directory vpnclient

Any ideas? Thx for your time.

Hi, you’ll have to install patch because it is not installed by default in openSUSE11.

I should have tought of it after I searched for the executable and couldn’t find it. I was able to find the man for it, but assumed that is a default program to OpenSuse. Thank you or Danke shon(don’t have the right characters).