If you wish to see the Apache modules available on your disk, perhaps to see the spelling when modifying the httpd.conf, then go to the following directory:
[ahmed@amayem ~]$ cd /etc/httpd/
[ahmed@amayem httpd]$ ls
conf conf.d logs modules run
The modules directory is what we are after:
[ahmed@amayem httpd]$ cd modules
[ahmed@amayem modules]$ ls
libphp5.so mod_authn_dbd.so mod_authz_host.so mod_dav_fs.so mod_expires.so mod_log_config.so mod_proxy_connect.so mod_speling.so mod_vhost_alias.so
mod_actions.so mod_authn_dbm.so mod_authz_owner.so mod_dav.so mod_ext_filter.so mod_log_forensic.so mod_proxy_ftp.so mod_status.so
mod_alias.so mod_authn_default.so mod_authz_user.so mod_dbd.so mod_filter.so mod_logio.so mod_proxy_http.so mod_substitute.so
mod_asis.so mod_authn_file.so mod_autoindex.so mod_deflate.so mod_headers.so mod_mime_magic.so mod_proxy_scgi.so mod_suexec.so
mod_auth_basic.so mod_authnz_ldap.so mod_cache.so mod_dir.so mod_ident.so mod_mime.so mod_proxy.so mod_unique_id.so
mod_auth_digest.so mod_authz_dbm.so mod_cern_meta.so mod_disk_cache.so mod_include.so mod_negotiation.so mod_reqtimeout.so mod_userdir.so
mod_authn_alias.so mod_authz_default.so mod_cgid.so mod_dumpio.so mod_info.so mod_proxy_ajp.so mod_rewrite.so mod_usertrack.so
mod_authn_anon.so mod_authz_groupfile.so mod_cgi.so mod_env.so mod_ldap.so mod_proxy_balancer.so mod_setenvif.so mod_version.so
Done! Congratulations!
References
Rich Homolka‘s answer to this superuser question
