Apache is the HTTP server which is freely available over internet. it is widely used on Linux distribution to host websites. Apache configuration is managed by the configuration file httpd.conf. You can use locate command to find the configuration file
$ locate httpd.conf
/etc/httpd/conf/httpd.conf
After making the change , you need to restart the Apache services to make it effective
Command for Linux version 4.x/5.x/6.x or older commands :
Start Command
service httpd start
Stop Command
service httpd stop
Restart command
service httpd restart
status command
service httpd status
How to automatically start the httpd service after the reboot
chkconfig httpd on
Command for Linux version Linux version 7.x or newer commands :
Start command
systemctl start httpd.service
Stop command
systemctl stop httpd.service
systemctl stop httpd.service
Restart command
systemctl restart httpd.service
How to enable httpd service to start after reboot
systemctl enable httpd