This file contains functions to be used by most or all shell scripts in the /etc/init.d directory.
此文件包含/etc/init.d目录中大多数或所有shell脚本使用的函数
Sample /etc/init.d/functions file
https://bash.cyberciti.biz/guide//etc/init.d/functions
Managing Linux daemons with init scripts
https://www.linux.com/learn/managing-linux-daemons-init-scripts
/etc/init.d/functions详解
http://blog.51cto.com/billy98/2043957
https://www.bbsmax.com/A/amd0VN21Jg/
骏马金龙 functions文件
http://www.cnblogs.com/f-ck-need-u/p/7518142.html
How to use the daemon function in /etc/rc.d/init.d/functions
https://serverfault.com/questions/493046/running-arbitrary-program-as-daemon-from-init-script
教你写SysV服务管理脚本
http://www.qingpingshan.com/pc/fwq/326976.html
EPEL:SysVInitScripts
https://fedoraproject.org/wiki/EPEL:SysVInitScripts
Red Hat NGINX Init Script
https://www.nginx.com/resources/wiki/start/topics/examples/redhatnginxinit
Init scripts
https://wiki.amahi.org/index.php/Init_scripts
Packaging:Systemd
https://fedoraproject.org/wiki/Packaging:Systemd
初识 systemd
http://www.cnblogs.com/sparkdev/p/8448237.html
systemd 编写服务管理脚本
https://www.cnblogs.com/sparkdev/p/8521812.html
systemd、upstart和system V
https://www.cnblogs.com/baiyw/p/3504419.html
