命令概况
CentOS < 7.x
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| service command # 使用service命令做start|stop|restart sshd
chkconfig command # turn on or off 机器自启sshd
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CentOS >= 7.x
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| systemctl command # 管理 start|stop|start 自启sshd
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CentOS < 7.x
chkconfig
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| $ chkconfig sshd on # 开机自启sshd
$ chkconfig sshd off # 开机关闭自启sshd
$ chkconfig --list sshd # 查看每个运行级别类型中服务的当前状态
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service
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| $ service sshd start | stop | restart
or
$ /etc/init.d/sshd start | stop | restart
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CentOS >= 7.x
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| $ systemctl enable sshd.service # 开机自启sshd
$ systemctl disable sshd.service # 开机关闭自启sshd
$ systemctl start sshd.service # 启动sshd
$ systemctl restart sshd.service # 重启
$ systemctl stop sshd.service # 停止
$ systemctl reload sshd.service # 重新加载
$ systemctl status sshd.service # 查看启动状态
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