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service ssh restart是centos 6的命令。你这是centos 7。应该是systemctl restart sshd
service ssh restart
systemctl restart sshd
systemctl restart sshd.service 或 service sshd restart
centos是sshd。ubuntu是ssh
service ssh restart是centos 6的命令。你这是centos 7。应该是systemctl restart sshdsystemctl restart sshd.service 或 service sshd restart
centos是sshd。ubuntu是ssh