Systemd 如何设置 开机启动 守护进程
https://blog.csdn.net/chenhao_c_h/article/details/92064209
Linux系统安全强化指南
https://zhuanlan.zhihu.com/p/450774477
https://www.freedesktop.org/software/systemd/man/systemd.exec.html
http://www.jinbuguo.com/systemd/systemd.service.html
nginx安装及其配置详细教程
https://www.cnblogs.com/lywJ/p/10710361.html
springboot自启动脚本shell、systemctl以及service文件Environment用法
https://blog.csdn.net/weixin_39992480/article/details/102761989
systemd 脚本设置服务
https://blog.csdn.net/liuwei0376/article/details/111472935
编写systemd service文件
https://blog.csdn.net/djskl/article/details/46671453
如何编写一个Systemd Service
https://segmentfault.com/a/1190000014740871
https://unix.stackexchange.com/questions/506347/why-do-most-systemd-examples-contain-wantedby-multi-user-target/506374
如何优雅的使用 Systemd 管理服务
https://zhuanlan.zhihu.com/p/271071439
systemctl使用reload及踩坑
https://blog.csdn.net/weixin_39992480/article/details/95484293
第十二章 systemctl管理脚本
http://www.bubuko.com/infodetail-3702918.html
centos 6
/etc/init.d/sshd restart
/etc/init.d/sshd reload
service sshd restart
centos 7
systemctl status sshd.service
systemctl restart sshd.service
/etc/rc.local 与 /etc/init.d Linux 开机自动运行程序
https://www.cnblogs.com/fatt/p/4790561.html
linux的开机启动过程（rc.local、init.d、rc.x、init的作用）
https://blog.csdn.net/wngua/article/details/54668895
[root@node1 init.d]# ls -l /etc/rc.d 总用量 4 drwxr-xr-x. 2 root root 113 1月 30 13:39 init.d drwxr-xr-x. 2 root root 82 2月 8 09:47 rc0.d drwxr-xr-x. 2 root root 82 2月 8 09:47 rc1.d drwxr-xr-x. 2 root root 82 2月 8 09:47 rc2.d drwxr-xr-x. 2 root root 82 2月 8 09:47 rc3.d drwxr-xr-x. 2 root root 82 2月 8 09:47 rc4.d drwxr-xr-x. 2 root root 82 2月 8 09:47 rc5.d drwxr-xr-x. 2 root root 82 2月 8 09:47 rc6.d -rw-r--r--. 1 root root 473 10月 31 2018 rc.local [root@node1 init.d]# ls -l /etc/rc.d/init.d 总用量 60 -rw-r--r--. 1 root root 18281 8月 24 2018 functions -rwxr-xr-x. 1 root root 754 11月 15 09:44 mxagentrun -rwxr-xr-x. 1 mysql mysql 10576 4月 8 2018 mysql -rwxr-xr-x. 1 root root 4569 8月 24 2018 netconsole -rwxr-xr-x. 1 root root 7923 8月 24 2018 network -rw-r--r--. 1 root root 1160 10月 31 2018 README -rwxr-xr-x. 1 root root 3476 8月 9 2019 sshd [root@node1 init.d]# ls -l /etc/init.d lrwxrwxrwx. 1 root root 11 5月 24 2021 /etc/init.d -> rc.d/init.d [root@node1 init.d]# ls -l /etc/rc.local lrwxrwxrwx. 1 root root 13 5月 24 2021 /etc/rc.local -> rc.d/rc.local [root@node1 init.d]#