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Linux centos 运行telnet命令,出现下面的错误提示:

[root@localhost ~]# telnet 127.0.0.1
-bash: telnet: command not found

解决方法: 安装telnet服务

centos、ubuntu安装telnet命令的方法.

    yum list telnet*              列出telnet相关的安装包
    yum install telnet-server          安装telnet服务
    yum install telnet.*           安装telnet客户端

 

[root@localhost ~]# yum list telnet* 
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
 * base: mirrors.cn99.com
 * extras: mirrors.shu.edu.cn
 * updates: mirrors.cn99.com
Available Packages
telnet.x86_64                            1:0.17-48.el6                      base
telnet-server.x86_64                     1:0.17-48.el6                      base

 

 

[root@localhost ~]# yum install telnet-server
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
 * base: mirrors.cn99.com
 * extras: mirrors.shu.edu.cn
 * updates: mirrors.cn99.com
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package telnet-server.x86_64 1:0.17-48.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package               Arch           Version                Repository    Size
================================================================================
Installing:
 telnet-server         x86_64         1:0.17-48.el6          base          37 k

Transaction Summary
================================================================================
Install       1 Package(s)

Total download size: 37 k
Installed size: 54 k
Is this ok [y/N]: y
Downloading Packages:
telnet-server-0.17-48.el6.x86_64.rpm                     |  37 kB     00:00     
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
  Installing : 1:telnet-server-0.17-48.el6.x86_64                           1/1 
  Verifying  : 1:telnet-server-0.17-48.el6.x86_64                           1/1 

Installed:
  telnet-server.x86_64 1:0.17-48.el6                                            

Complete!
[root@localhost ~]# 

 

 

[root@localhost ~]# yum install telnet.*
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
 * base: mirrors.cn99.com
 * extras: mirrors.shu.edu.cn
 * updates: mirrors.cn99.com
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package telnet.x86_64 1:0.17-48.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

====================================================================================================================================
 Package                       Arch                          Version                              Repository                   Size
====================================================================================================================================
Installing:
 telnet                        x86_64                        1:0.17-48.el6                        base                         58 k

Transaction Summary
====================================================================================================================================
Install       1 Package(s)

Total download size: 58 k
Installed size: 109 k
Is this ok [y/N]: y
Downloading Packages:
telnet-0.17-48.el6.x86_64.rpm                                                                                |  58 kB     00:00     
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : 1:telnet-0.17-48.el6.x86_64                                                                                      1/1 
  Verifying  : 1:telnet-0.17-48.el6.x86_64                                                                                      1/1 

Installed:
  telnet.x86_64 1:0.17-48.el6                                                                                                       

Complete!
[root@localhost ~]# 

telnet退出命令

ctrl+]    quit
 
我们经常要用到telnet来测试FTP端口,但是有一个问题估计大家都会遇到,在telnet进入某个端口后无法退出,没办法,为了继续测试只好关掉这个dos窗口,重新打开一个。 这里教给你一个方法,按住ctrl+]就可以退出。
 
 
欢迎使用 Microsoft Telnet Client
Escape 字符是 'CTRL+]'

         Microsoft Telnet> quit
C:\Documents and Settings\Administrator>
 
然后再输入quit就可以完全退出了。