Someone

RewriteRule ^/(images|links)/(.*) $0
RewriteRule ^/contact$ /contact.php
RewriteRule ^/error-codes$ /error-codes.php
RewriteRule ^/file-names$ /file-names.php
RewriteRule ^/startup-processes$ /startup-processes.php
RewriteRule ^/privacy$ /privacy.php


RewriteRule ^error-codes/([A-Za-z0-9-]+)$ /error-listing.php?listing=$1
RewriteRule ^error-codes/page/([0-9]+)$ /error-codes.php?page=$1&cat=error-codes


RewriteRule ^/file-names/page/([0-9]+)$ /file-names.php?page=$1&cat=file-names
RewriteRule ^/startup-processes/page/^([0-9]+)$ /startup-processes.php?page=$1&cat=file-names
RewriteRule ^/file-names/^([0-9a-zA-Z\-\+]+)$ /file-listing.php?listing=$1
RewriteRule ^/startup-processes/^([0-9a-zA-Z\-\+]+)$ /startup-listing.php?listing=$1