Ok got it working. Heres the nginx rewrite if anyone needs it.
Code:
location / {
rewrite ^/([a-zA-Z0-9\-\_]+)[/]*$ /index.php?cmd=$1 last;
rewrite ^/([a-zA-Z0-9\-\_]+)[/]*([a-zA-Z0-9\-\_]+)[/]*$ /index.php?cmd=$1&arg1=$2 last;
rewrite ^/([a-zA-Z0-9\-\_]+)[/]*([a-zA-Z0-9\-\_]+)[/]*([a-zA-Z0-9\-\_]+)[/]*$ /index.php?cmd=$1&arg1=$2&arg2=$3 last;
rewrite ^/([a-zA-Z0-9\-\_]+)[/]*([a-zA-Z0-9\-\_]+)[/]*([a-zA-Z0-9\-\_]+)[/]*([a-zA-Z0-9\-\_]+)[/]*$ /index.php?cmd=$1&arg1=$2&arg2=$3&arg3=$4 last;
}