1、Linux centos 运行telnet命令，出现下面的错误提示：
[root@hdp2 ~]# telnet hdp1 44444
-bash: telnet: command not found
2、检查服务是否安装
[root@hdp2 ~]# rpm -qa telnet*
3、安装talnet服务
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@hdp2 ~]# yum list telnet*
Loaded plugins: fastestmirror
Determining fastest mirrors
* base: mirrors.huaweicloud.com
* extras: mirrors.huaweicloud.com
* updates: mirrors.njupt.edu.cn
base | 3.7 kB 00:00
extras | 3.4 kB 00:00
extras/primary_db | 26 kB 00:00
mysql-connectors-community | 2.5 kB 00:00
mysql-tools-community | 2.5 kB 00:00
mysql57-community | 2.5 kB 00:00
updates | 3.4 kB 00:00
updates/primary_db | 1.9 MB 00:04
Available Packages
telnet.x86_64 1:0.17-48.el6 base
telnet-server.x86_64 1:0.17-48.el6 base
[root@hdp2 ~]# yum install telnet-server
Loaded plugins: fastestmirror
Setting up Install Process
Loading mirror speeds from cached hostfile
* base: mirrors.huaweicloud.com
* extras: mirrors.huaweicloud.com
* updates: mirrors.njupt.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package telnet-server.x86_64 1:0.17-48.el6 will be installed
--> Processing Dependency: xinetd for package: 1:telnet-server-0.17-48.el6.x86_64
--> Running transaction check
---> Package xinetd.x86_64 2:2.3.14-40.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
Installing for dependencies:
xinetd x86_64 2:2.3.14-40.el6 base 122 k
Transaction Summary
============================================================================================
Install 2 Package(s)
Total download size: 159 k
Installed size: 313 k
Is this ok [y/N]: y
Downloading Packages:
(1/2): telnet-server-0.17-48.el6.x86_64.rpm | 37 kB 00:00
(2/2): xinetd-2.3.14-40.el6.x86_64.rpm | 122 kB 00:00
--------------------------------------------------------------------------------------------
Total 171 kB/s | 159 kB 00:00
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
Installing : 2:xinetd-2.3.14-40.el6.x86_64 1/2
Installing : 1:telnet-server-0.17-48.el6.x86_64 2/2
Verifying : 1:telnet-server-0.17-48.el6.x86_64 1/2
Verifying : 2:xinetd-2.3.14-40.el6.x86_64 2/2
Installed:
telnet-server.x86_64 1:0.17-48.el6
Dependency Installed:
xinetd.x86_64 2:2.3.14-40.el6
Complete!
[root@hdp2 ~]# yum install telnet.*
Loaded plugins: fastestmirror
Setting up Install Process
Loading mirror speeds from cached hostfile
* base: mirrors.huaweicloud.com
* extras: mirrors.huaweicloud.com
* updates: mirrors.njupt.edu.cn
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@hdp2 ~]# rpm -q telnet
telnet-0.17-48.el6.x86_64
[root@hdp2 ~]# telnet hdp1 44444
Trying 192.168.59.130...
Connected to hdp1.
Escape character is '^]'.
hello jim
OK