What characters do I need to escape when using sed in a sh script? – Unix & Linux Stack Exchange http://unix.stackexchange.com/questions/32907/what-characters-do-i-need-to-escape-when-using-sed-in-a-sh-script
An In-Depth Discussion of Virtual Host Matching http://httpd.apache.org/docs/current/vhosts/details.html
How to disable default VirtualHost in apache2? http://serverfault.com/questions/114931/how-to-disable-default-virtualhost-in-apache2
How to disable the default document root in Apache? http://serverfault.com/questions/705169/how-to-disable-the-default-document-root-in-apache
How do I setup a PTR record with my exisiting domain name? | DigitalOcean https://www.digitalocean.com/community/questions/how-do-i-setup-a-ptr-record-with-my-exisiting-domain-name
Authentication and Authorization – Apache HTTP Server Version 2.4 https://httpd.apache.org/docs/2.4/howto/auth.html
mod_auth_basic – Apache HTTP Server Version 2.4 https://httpd.apache.org/docs/2.4/mod/mod_auth_basic.html#authbasicprovider
htdbm – Manipulate DBM password databases – Apache HTTP Server Version 2.4 https://httpd.apache.org/docs/2.4/programs/htdbm.html
bash – How to match a single quote in sed – Stack Overflow http://stackoverflow.com/questions/91110/how-to-match-a-single-quote-in-sed
shell – Substitute pattern within a file with the content of other file – Unix & Linux Stack Exchange http://unix.stackexchange.com/questions/49377/substitute-pattern-within-a-file-with-the-content-of-other-file
How to assign a heredoc value to a variable in Bash? – Stack Overflow http://stackoverflow.com/questions/1167746/how-to-assign-a-heredoc-value-to-a-variable-in-bash
Use sed in bash to replace string with heredoc – Stack Overflow http://stackoverflow.com/questions/26770426/use-sed-in-bash-to-replace-string-with-heredoc