I'm trying to get ns-2 to run on UBUNTU for my dissertation. It's been a while since I've used UNIX or C++ and am struggling with it. I got it to install and verify successfully, but when I type 'ns' it looks like it is pointing to 'host'. When I type man ns, it seems like it gives me the info for host. host is not aliased with ns, and I can't figure out what to do short of re-installing it.