# shutdown now // this brings the system to Single User – press enter for shell
// and then CTRL + D or logout to switch to multi user

To delete options /var/db/ports/$port/options && make install clean again.

Related posts:

1. Installing ports collection
2. Eject users Juniper
3. First steps configuring Juniper Routers
4. Cisco Netflow to detect infected hosts
5. Configure syslog