yum安装openssh

一、安装openssh

#yum install -y openssh

二、安装openssh-server

#yum install -y openssh-server

三、安装openssh-clients

#yum install -y openssh-clients

四、centos7 启动openssh

#systemctl start sshd.services

centos6 启动openssh

#/etc/init.d/sshd start

centos7 的启动没有/etc/init.d/sshd   只有 /etc/init.d/README 

/etc/init.d/README 中描述了，cnetos7 要用systemctl 启动