With Apache 2.4 httpd I am starting to see log messages like this:
[mpm_prefork:notice] [pid 1521] AH00163: Apache/2.4.10 ...
[core:notice] [pid 1521] AH00094: Command line: '/usr/sbin/apache2'
I can infer the meaning of those two, but I would like to have a source that lists all these "AH" codes and their meanings. Where is that source?
You can have a look here:
List of all errors present in the httpd source.
https://wiki.apache.org/httpd/ListOfErrors
A very long list indeed!