Centos7下安装Telnet服务
1.检查本机是否安装了telnet
命令：rpm -qa telnet-server
命令：rpm -qa xinetd
2、yum在线安装telnet
命令：yum -y install telnet-server.x86_64
命令：yum -y install telnet.x86_64
命令：yum -y install xinetd.x86_64
3.设置开机启动
命令：chkconfig telnet on
命令：systemctl enable xinetd.service
命令：systemctl enable telnet.socket
4.开启telnet服务
命令：systemctl start telnet.socket
命令：systemctl start xinetd
5.输入telnet即可正常使用
