Centos7-安裝telnet服務

• [root@iZ8vb4ukto7mbo5xsnb2ecZ ~]# rpm -qa xinetd #檢查是否安裝過
  xinetd-2.3.15-13.el7.x86_64
  [root@iZ8vb4ukto7mbo5xsnb2ecZ ~]# rpm -qa telnet-server #檢查是否安裝過
  telnet-server-0.17-64.el7.x86_64
  [root@iZ8vb4ukto7mbo5xsnb2ecZ ~]# rpm -e --nodeps xinetd-2.3.15-13.el7.x86_64 telnet-server-0.17-64.el7.x86_64 #卸載已經存在的安裝文件

• 
  [root@iZ8vb4ukto7mbo5xsnb2ecZ ~]# yum list |grep telnet
  dcap-tunnel-telnet.x86_64 2.47.12-4.el7 epel
  libguac-client-telnet.x86_64 1:0.9.14-1.el7 epel
  libtelnet.x86_64 0.21-5.el7 epel
  libtelnet-devel.x86_64 0.21-5.el7 epel
  libtelnet-utils.x86_64 0.21-5.el7 epel
  telnet.x86_64 1:0.17-64.el7 base
  telnet-server.x86_64 1:0.17-64.el7 base

• 
  [root@iZ8vb4ukto7mbo5xsnb2ecZ ~]# yum list |grep xinetd
  xinetd.x86_64 2:2.3.15-13.el7 base

  
  

  3,執行安裝語句

  • yum -y install telnet-server.x86_64
  • yum -y install telnet.x86_64
  • yum -y install xinetd.x86_64

4,設置開機自啟：

• systemctl enable xinetd.service
• systemctl enable telnet.socket#這個命名如果第一次執行報錯，再執行下即可。 

5,開啟service：

• systemctl start telnet.socket
• systemctl start xinetd