> ssh user@localhost
> ssh: connect to host localhost port 22: Connection refused
> ftp user@localhost
> ftp: connect: Connection refused
> ssh joker@localhost
> joker:localhost's password:
> joker@localhost: "ls -l"
> Unable to access: ''. No such file or directory
> joker@localhost: "ls"
> bin boot dev etc home lib lost+found opt proc root run sbin srv sys tmp usr var
> joker@localhost: "exit"