Enable Apache automatically in Linux

In Linux, I usually use the source code compilation method to install Apache. There are two ways to enable Apache to automatically start when the system starts.
1. Add the command to start Apache in/etc/rc. d/rc. Local, for example,/usr/local/httpd/bin/apachectl start.
2. Register Apache as a system service
First, copy the apachectl command to the/etc/rc. d/init. d directory and change it to httpd.
Open the httpd file in the editor and go to the first line #! Add the following two lines of text under/bin/sh:
# Chkconfig: 35 70 30
# Description: Apache
Register the service
Chkconfig -- add httpd
Everything is okay. Start the service.
Service httpd start
The first three numbers in the second row indicate that Apache is started under runtime Level 3 and 5, and the second and third indicate the priority configuration of startup and stop, which is irrelevant.