vim修复：

修复前提，你到UBUNTU能够联网。否则仅仅能卸载，不能安装

1.sudo apt-get remove vim-common

2.sudo apt-get install vim

telnet：

开启telnet:

1.首先安装必要telnet

在终端输入命令：sudo apt-get install xinetd telnetd

2.配置

1）sudo
vi/etc/inetd.conf 并增加下面一行

telnet stream tcp nowait telnetd/usr/sbin/tcpd /usr/sbin/in.telnetd

2）输入sudo
vi/etc/xinetd.conf并增加内容：

# Simple configuration file for xinetd

#

#Some defaults, and include /etc/xinetd.d/

defaults

{

#Please note that you need a log_type line to be able to use log_on_success

#and log_on_failure. The default is the following :

#log_type = SYSLOG daemon info

instances = 60

log_type = SYSLOG authpriv

log_on_success = HOST PID

log_on_failure = HOST

cps = 25 30

}

includedir /etc/xinetd.d

3）sudo
vi/etc/xinetd.d/telnet并增加下面内容：

# default: on

#description: The telnet server serves telnet sessions; it uses \

#unencrypted username/password pairs for authentication.

service telnet

{

disable = no

flags = REUSE

socket_type = stream

wait = no

user = root

server = /usr/sbin/in.telnetd

log_on_failure += USERID

}

4）重新启动网络服务sudo/etc/init.d/xinetd
restart

5）就可以在还有一台client上登录开启TTELNET的server

关闭telnet:

1.ctrl + ]
回车

2.quit退出

ubuntu更新源：

sudo cp /etc/apt/sources.list/etc/apt/sources.list.backup

sudo gedit /etc/apt/sources.list

将以下源拷贝到sources.list就可以

deb http://mirrors.163.com/ubuntu/ precisemain universe restricted multiverse

deb-src http://mirrors.163.com/ubuntu/precise main universe restricted multiverse

deb http://mirrors.163.com/ubuntu/precise-security universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/precise-security universe main multiverse restricted

deb http://mirrors.163.com/ubuntu/ precise-updatesuniverse main multiverse restricted

deb http://mirrors.163.com/ubuntu/precise-proposed universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/precise-proposed universe main multiverse restricted

deb http://mirrors.163.com/ubuntu/precise-backports universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/precise-backports universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/precise-updates universe main multiverse restricted