$ git clone git://github.com/vakuum/zombies
$ cd zombies
$ gcc zombies.c -o zombies
$ ./zombies 2013 &
$ top

$ gcc -Ofast zombies.c -o zombies

$ gcc -Wall zombies.c -o zombies

$ gcc -std=c1x zombies.c -o zombies

$ gcc -pedantic zombies.c -o zombies

$ gcc zombies.c -o zombies
$ strip zombies

$ gcc -std=c89 zombies.c -o zombies