端口转发后执行putty连接------------------》VirtualBox+ubuntu_server

login as: fleam
fleam@127.0.0.1's password:
Welcome to Ubuntu 14.04. LTS (GNU/Linux 3.13.--generic i686)

 * Documentation:  https://help.ubuntu.com/

  System information as of Wed Sep   :: CST 

  System load:  0.0               Processes:
  Usage of /:   16.1% of .01GB   Users logged in:
  Memory usage: %               IP address for eth0: 10.0.2.15
  Swap usage:   %

  Graph this data and manage this system at:
    https://landscape.canonical.com/

New release '16.04.1 LTS' available.
Run 'do-release-upgrade' to upgrade to it.

Last login: Wed Sep   ::  from 10.0.2.2
fleam@fleam:~$ cd
fleam@fleam:~$ cd /
fleam@fleam:/$ ls
bin   dev  home        lib         media  opt   root  sbin  sys  usr  vmlinuz
boot  etc  initrd.img  lost+found  mnt    proc  run   srv   tmp  var
fleam@fleam:/$ cd var
fleam@fleam:/var$ ls
backups  cache  crash  lib  local  lock  log  mail  opt  run  spool  tmp  www
fleam@fleam:/var$ cd www
fleam@fleam:/var/www$ ls
html
fleam@fleam:/var/www$ cd html
fleam@fleam:/var/www/html$ ls
index.html
fleam@fleam:/var/www/html$ sudo vi index.html
[sudo] password for fleam: