name : sshd-keygen@.service [Unit] Description=OpenSSH %i Server Key Generation ConditionFileNotEmpty=|!/etc/ssh/ssh_host_%i_key [Service] Type=oneshot EnvironmentFile=-/etc/sysconfig/sshd ExecStart=/usr/libexec/openssh/sshd-keygen %i [Install] WantedBy=sshd-keygen.target