Vim repair, telnet installation start, linux update software source

vim repair:

Repair the premise, you can connect to UBUNTU, otherwise you can only uninstall, can not install

1.sudo apt -get remove vim-common

2.sudo apt-get install vim

telnet:

telnet:

1 First install the necessary telnet

Enter the command at the terminal: sudo apt-get install xinetd telnetd

2. Configure

1) sudo vi/etc/inetd.conf and join The following line

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

2) Enter sudo vi/etc/xinetd.conf And add content:

# Simple configuration file for xinetd

#

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

defaults< Br>

{

#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 and add the following:

# 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) Restart the network service sudo/etc/init.d/xinetd restart

5) on another client Log in to open TTELNET server

Close telnet:

1.ctrl + ] Enter

2.quit to exit

< Br>

ubuntu update source:

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

sudo gedit /etc/apt/sources. List

Copy the following source to sources.list

deb http://m Irrors.163.com/ubuntu/precisionmain 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