Directive Quick Reference - Apache HTTP Server

A | B | C | D | E | F | G | H | I | K | L | M | N | O | P | R | S | T | U | V | W | X

s	server config
v	virtual host
d	directory
h	.htaccess

C	Core
M	MPM
B	Base
E	Extension
X	Experimental

AcceptMutex Default\|`method`	Default	s	M
Method that Apache uses to serialize multiple children accepting requests on network sockets
AcceptPathInfo On\|Off\|Default	Default	svdh	C
Resources accept trailing pathname information
AccessFileName `filename` [`filename`] ...	.htaccess	sv	C
Name of the distributed configuration file
Action `action-type` `cgi-script`		svdh	B
Activates a CGI script for a particular handler or content-type
AddAlt `string` `file` [`file`] ...		svdh	B
Alternate text to display for a file, instead of an icon selected by filename
AddAltByEncoding `string` `MIME-encoding` [`MIME-encoding`] ...		svdh	B
Alternate text to display for a file instead of an icon selected by MIME-encoding
AddAltByType `string` `MIME-type` [`MIME-type`] ...		svdh	B
Alternate text to display for a file, instead of an icon selected by MIME content-type
AddCharset `charset` `extension` [`extension`] ...		svdh	B
Maps the given filename extensions to the specified content charset
AddDefaultCharset On\|Off\|`charset`	Off	svdh	C
Default charset parameter to be added when a response content-type is `text/plain` or `text/html`
AddDescription `string file` [`file`] ...		svdh	B
Description to display for a file
AddEncoding `MIME-enc` `extension` [`extension`] ...		svdh	B
Maps the given filename extensions to the specified encoding type
AddHandler `handler-name` `extension` [`extension`] ...		svdh	B
Maps the filename extensions to the specified handler
AddIcon `icon` `name` [`name`] ...		svdh	B
Icon to display for a file selected by name
AddIconByEncoding `icon` `MIME-encoding` [`MIME-encoding`] ...		svdh	B
Icon to display next to files selected by MIME content-encoding
AddIconByType `icon` `MIME-type` [`MIME-type`] ...		svdh	B
Icon to display next to files selected by MIME content-type
AddInputFilter `filter`[;`filter`...] `extension` [`extension`] ...		svdh	B
Maps filename extensions to the filters that will process client requests
AddLanguage `MIME-lang` `extension` [`extension`] ...		svdh	B
Maps the given filename extension to the specified content language
AddModuleInfo `module-name` `string`		sv	E
Adds additional information to the module information displayed by the server-info handler
AddOutputFilter `filter`[;`filter`...] `extension` [`extension`] ...		svdh	B
Maps filename extensions to the filters that will process responses from the server
AddOutputFilterByType `filter`[;`filter`...] `MIME-type` [`MIME-type`] ...		svdh	C
assigns an output filter to a particular MIME-type
AddType `MIME-type` `extension` [`extension`] ...		svdh	B
Maps the given filename extensions onto the specified content type
Alias `URL-path` `file-path`\|`directory-path`		sv	B
Maps URLs to filesystem locations
AliasMatch `regex` `file-path`\|`directory-path`		sv	B
Maps URLs to filesystem locations using regular expressions
Allow from all\|`host`\|env=`env-variable` [`host`\|env=`env-variable`] ...		dh	B
Controls which hosts can access an area of the server
AllowCONNECT `port` [`port`] ...	443 563	sv	E
Ports that are allowed to `CONNECT` through the proxy
AllowEncodedSlashes On\|Off	Off	sv	C
Determines whether encoded path separators in URLs are allowed to be passed through
AllowOverride All\|None\|`directive-type` [`directive-type`] ...	All	d	C
Types of directives that are allowed in `.htaccess` files
Anonymous `user` [`user`] ...		dh	E
Specifies userIDs that are allowed access without password verification
Anonymous_Authoritative On\|Off	Off	dh	E
Configures if authorization will fall-through to other methods
Anonymous_LogEmail On\|Off	On	dh	E
Sets whether the password entered will be logged in the error log
Anonymous_MustGiveEmail On\|Off	On	dh	E
Specifies whether blank passwords are allowed
Anonymous_NoUserID On\|Off	Off	dh	E
Sets whether the userID field may be empty
Anonymous_VerifyEmail On\|Off	Off	dh	E
Sets whether to check the password field for a correctly formatted email address
AssignUserID `user-id` `group-id`		v	M
Tie a virtual host to a user and group ID
AuthAuthoritative On\|Off	On	dh	B
Sets whether authorization and authentication are passed to lower level modules
AuthDBMAuthoritative On\|Off	On	dh	E
Sets whether authentication and authorization will be passwed on to lower level modules
AuthDBMGroupFile `file-path`		dh	E
Sets the name of the database file containing the list of user groups for authentication
AuthDBMType default\|SDBM\|GDBM\|NDBM\|DB	default	dh	E
Sets the type of database file that is used to store passwords
AuthDBMUserFile `file-path`		dh	E
Sets thename of a database file containing the list of users and passwords for authentication
AuthDigestAlgorithm MD5\|MD5-sess	MD5	dh	X
Selects the algorithm used to calculate the challenge and response hases in digest authentication
AuthDigestDomain `URI` [`URI`] ...		dh	X
URIs that are in the same protection space for digest authentication
AuthDigestFile `file-path`		dh	X
Location of the text file containing the list of users and encoded passwords for digest authentication
AuthDigestGroupFile `file-path`		dh	X
Name of the text file containing the list of groups for digest authentication
AuthDigestNcCheck On\|Off	Off	s	X
Enables or disables checking of the nonce-count sent by the server
AuthDigestNonceFormat `format`		dh	X
Determines how the nonce is generated
AuthDigestNonceLifetime `seconds`	300	dh	X
How long the server nonce is valid
AuthDigestQop none\|auth\|auth-int [auth\|auth-int]	auth	dh	X
Determines the quality-of-protection to use in digest authentication
AuthDigestShmemSize `size`	1000	s	X
The amount of shared memory to allocate for keeping track of clients
AuthGroupFile `file-path`		dh	B
Sets the name of a text file containing the list of user groups for authentication
AuthLDAPAuthoritative on\|off	on	dh	X
Prevent other authentication modules from authenticating the user if this one fails
AuthLDAPBindDN distinguished-name		dh	X
Optional DN to use in binding to the LDAP server
AuthLDAPBindPassword password		dh	X
Password used in conjuction with the bind DN
AuthLDAPCharsetConfig file-path		s	X
Language to charset conversion configuration file
AuthLDAPCompareDNOnServer on\|off	on	dh	X
Use the LDAP server to compare the DNs
AuthLDAPDereferenceAliases never\|searching\|finding\|always	Always	dh	X
When will the module de-reference aliases
AuthLDAPEnabled on\|off	on	dh	X
Turn on or off LDAP authentication
AuthLDAPFrontPageHack on\|off	off	dh	X
Allow LDAP authentication to work with MS FrontPage
AuthLDAPGroupAttribute attribute		dh	X
LDAP attributes used to check for group membership
AuthLDAPGroupAttributeIsDN on\|off	on	dh	X
Use the DN of the client username when checking for group membership
AuthLDAPRemoteUserIsDN on\|off	off	dh	X
Use the DN of the client username to set the REMOTE_USER environment variable
AuthLDAPUrl url		dh	X
URL specifying the LDAP search parameters
AuthName `auth-domain`		dh	C
Authorization realm for use in HTTP authentication
AuthType Basic\|Digest		dh	C
Type of user authentication
AuthUserFile `file-path`		dh	B
Sets the name of a text file containing the list of users and passwords for authentication
BrowserMatch regex [!]env-variable[=value] [[!]env-variable[=value]] ...		svdh	B
Sets environment variables conditional on HTTP User-Agent
BrowserMatchNoCase regex [!]env-variable[=value] [[!]env-variable[=value]] ...		svdh	B
Sets environment variables conditional on User-Agent without respect to case
BS2000Account `account`		s	M
Define the non-privileged account on BS2000 machines
CacheDefaultExpire `seconds`	3600 (one hour)	sv	X
The default duration to cache a document when no expiry date is specified.
CacheDirLength `length`	2	sv	X
The number of characters in subdirectory names
CacheDirLevels `levels`	3	sv	X
The number of levels of subdirectories in the cache.
CacheDisable `url-string`		sv	X
Disable caching of specified URLs
CacheEnable `cache_type` `url-string`		sv	X
Enable caching of specified URLs using a specified storage manager
CacheExpiryCheck On\|Off	On	sv	X
Indicates if the cache observes Expires dates when seeking files
CacheFile `file-path` [`file-path`] ...		s	X
Cache a list of file handles at startup time
CacheForceCompletion `Percentage`	60	sv	X
Percentage of document served, after which the server will complete caching the file even if the request is cancelled.
CacheGcClean `hours` `url-string`	?	sv	X
The time to retain unchanged cached files that match a URL
CacheGcDaily `time`	?	sv	X
The recurring time each day for garbage collection to be run. (24 hour clock)
CacheGcInterval `hours`		sv	X
The interval between garbage collection attempts.
CacheGcMemUsage `KBytes`	?	sv	X
The maximum kilobytes of memory used for garbage collection
CacheGcUnused `hours` `url-string`	?	sv	X
The time to retain unreferenced cached files that match a URL.
CacheIgnoreCacheControl On\|Off	Off	sv	X
Ignore the fact that the client requested the content not be cached.
CacheIgnoreNoLastMod On\|Off	Off	sv	X
Ignore the fact that a response has no Last Modified header.
CacheLastModifiedFactor `float`	0.1	sv	X
The factor used to compute an expiry date based on the LastModified date.
CacheMaxExpire `seconds`	86400 (one day)	sv	X
The maximum time in seconds to cache a document
CacheMaxFileSize `bytes`	1000000	sv	X
The maximum size (in bytes) of a document to be placed in the cache
CacheMinFileSize `bytes`	1	sv	X
The minimum size (in bytes) of a document to be placed in the cache
CacheNegotiatedDocs On\|Off	Off	sv	B
Allows content-negotiated documents to be cached by proxy servers
CacheRoot `directory`		sv	X
The directory root under which cache files are stored
CacheSize `KBytes`	1000000	sv	X
The maximum amount of disk space that will be used by the cache in KBytes
CacheTimeMargin `?`	?	sv	X
The minimum time margin to cache a document
CGIMapExtension `cgi-path` `.extension`		dh	C
Technique for locating the interpreter for CGI scripts
CharsetDefault `charset`		svdh	X
Charset to translate into
CharsetOptions `option` [`option`] ...	DebugLevel=0 NoImpl +	svdh	X
Configures charset translation behavior
CharsetSourceEnc `charset`		svdh	X
Source charset of files
CheckSpelling on\|off	Off	svdh	E
Enables the spelling module
ChildPerUserID `user-id` `group-id` `num-children`		s	M
Specify user ID and group ID for a number of child processes
ContentDigest On\|Off	Off	svdh	C
Enables the generation of `Content-MD5` HTTP Response headers
CookieDomain domain		svdh	E
The domain to which the tracking cookie applies
CookieExpires expiry-period		svdh	E
Expiry time for the tracking cookie
CookieLog `filename`		sv	B
Sets filename for the logging of cookies
CookieName token	Apache	svdh	E
Name of the tracking cookie
CookieStyle Netscape\|Cookie\|Cookie2\|RFC2109\|RFC2965	Netscape	svdh	E
Format of the cookie header field
CookieTracking on\|off	off	svdh	E
Enables tracking cookie
CoreDumpDirectory `directory`		s	M
Directory where Apache attempts to switch before dumping core
CustomLog `file`\|`pipe` `format`\|`nickname` [env=[!]`environment-variable`]		sv	B
Sets filename and format of log file
Dav On\|Off\|`provider-name`	Off	d	E
Enable WebDAV HTTP methods
DavDepthInfinity on\|off	off	svd	E
Allow PROPFIND, Depth: Infinity requests
DavLockDB `file-path`		sv	E
Location of the DAV lock database
DavMinTimeout `seconds`	0	svd	E
Minimum amount of time the server holds a lock on a DAV resource
DefaultIcon `url-path`		svdh	B
Icon to display for files when no specific icon is configured
DefaultLanguage `MIME-lang`		svdh	B
Sets all files in the given scope to the specified language
DefaultType `MIME-type`	text/plain	svdh	C
MIME content-type that will be sent if the server cannot determine a type in any other way
DeflateBufferSize `value`	8096	sv	E
Fragment size to be compressed at one time by zlib
DeflateCompressionLevel `value`		sv	E
How much compression do we apply to the output
DeflateFilterNote [`type`] `notename`		sv	E
Places the compression ratio in a note for logging
DeflateMemLevel `value`	9	sv	E
How much memory should be used by zlib for compression
DeflateWindowSize `value`	15	sv	E
Zlib compression window size
Deny from all\|`host`\|env=`env-variable` [`host`\|env=`env-variable`] ...		dh	B
Controls which hosts are denied access to the server
<Directory `directory-path`> ... </Directory>		sv	C
Enclose a group of directives that apply only to the named file-system directory and sub-directories
DirectoryIndex `local-url` [`local-url`] ...	index.html	svdh	B
List of resources to look for when the client requests a directory
<DirectoryMatch `regex`> ... </DirectoryMatch>		sv	C
Enclose directives that apply to file-system directories matching a regular expression and their subdirectories
DirectorySlash On\|Off	On	svdh	B
Toggle trailing slash redirects on or off
DocumentRoot `directory-path`	/usr/local/apache/h +	sv	C
Directory that forms the main document tree visible from the web
DumpIOInput On\|Off	Off	s	X
Dump all input data to the error log
DumpIOOutput On\|Off	Off	s	X
Dump all output data to the error log
EnableExceptionHook On\|Off	Off	s	M
Enables a hook that runs exception handlers after a crash
EnableMMAP On\|Off	On	svdh	C
Use memory-mapping to read files during delivery
EnableSendfile On\|Off	On	svdh	C
Use the kernel sendfile support to deliver files to the client
ErrorDocument `error-code` `document`		svdh	C
What the server will return to the client in case of an error
ErrorLog `file-path`\|syslog[:`facility`]	logs/error_log (Uni +	sv	C
Location where the server will log errors
Example		svdh	X
Demonstration directive to illustrate the Apache module API
ExpiresActive On\|Off		svdh	E
Enables generation of `Expires` headers
ExpiresByType `MIME-type` `<code>seconds`		svdh	E
Value of the `Expires` header configured by MIME type
ExpiresDefault `<code>seconds`		svdh	E
Default algorithm for calculating expiration time
ExtendedStatus On\|Off	Off	s	B
Keep track of extended status information for each request
ExtFilterDefine `filtername` `parameters`		s	E
Define an external filter
ExtFilterOptions `option` [`option`] ...	DebugLevel=0 NoLogS +	d	E
Configure `mod_ext_filter` options
FileETag `component` ...	INode MTime Size	svdh	C
File attributes used to create the ETag HTTP response header
<Files `filename`> ... </Files>		svdh	C
Contains directives that apply to matched filenames
<FilesMatch `regex`> ... </FilesMatch>		svdh	C
Contains directives that apply to regular-expression matched filenames
ForceLanguagePriority None\|Prefer\|Fallback [Prefer\|Fallback]	Prefer	svdh	B
Action to take if a single acceptable document is not found
ForceType `MIME-type`\|None		dh	C
Forces all matching files to be served with the specified MIME content-type
ForensicLog `filename`\|`pipe`		sv	E
Sets filename of the forensic log
Group `unix-group`	#-1	s	M
Group under which the server will answer requests
Header [`condition`] set\|append\|add\|unset\|echo `header` [`value`] [env=[!]`variable`]		svdh	E
Configure HTTP response headers
HeaderName `filename`		svdh	B
Name of the file that will be inserted at the top of the index listing
HostnameLookups On\|Off\|Double	Off	svd	C
Enables DNS lookups on client IP addresses
IdentityCheck On\|Off	Off	svd	C
Enables logging of the RFC1413 identity of the remote user
<IfDefine [!]`parameter-name`> ... </IfDefine>		svdh	C
Encloses directives that will be processed only if a test is true at startup
<IfModule [!]`module-name`> ... </IfModule>		svdh	C
Encloses directives that are processed conditional on the presence or absence of a specific module
ImapBase map\|referer\|`URL`	http://servername/	svdh	B
Default `base` for imagemap files
ImapDefault error\|nocontent\|map\|referer\|`URL`	nocontent	svdh	B
Default action when an imagemap is called with coordinates that are not explicitly mapped
ImapMenu none\|formatted\|semiformatted\|unformatted		svdh	B
Action if no coordinates are given when calling an imagemap
Include `file-path`\|`directory-path`		svd	C
Includes other configuration files from within the server configuration files
IndexIgnore `file` [`file`] ...		svdh	B
Adds to the list of files to hide when listing a directory
IndexOptions [+\|-]`option` [[+\|-]`option`] ...		svdh	B
Various configuration settings for directory indexing
IndexOrderDefault Ascending\|Descending Name\|Date\|Size\|Description	Ascending Name	svdh	B
Sets the default ordering of the directory index
ISAPIAppendLogToErrors on\|off	off	svdh	B
Record `HSE_APPEND_LOG_PARAMETER` requests from ISAPI extensions to the error log
ISAPIAppendLogToQuery on\|off	on	svdh	B
Record `HSE_APPEND_LOG_PARAMETER` requests from ISAPI extensions to the query field
ISAPICacheFile `file-path` [`file-path`] ...		sv	B
ISAPI .dll files to be loaded at startup
ISAPIFakeAsync on\|off	off	svdh	B
Fake asynchronous support for ISAPI callbacks
ISAPILogNotSupported on\|off	off	svdh	B
Log unsupported feature requests from ISAPI extensions
ISAPIReadAheadBuffer `size`	49152	svdh	B
Size of the Read Ahead Buffer sent to ISAPI extensions
KeepAlive On\|Off	On	sv	C
Enables HTTP persistent connections
KeepAliveTimeout `seconds`	15	sv	C
Amount of time the server will wait for subsequent requests on a persistent connection
LanguagePriority `MIME-lang` [`MIME-lang`] ...		svdh	B
The precendence of language variants for cases where the client does not express a preference
LDAPCacheEntries `number`	1024	s	X
Maximum number of entries in the primary LDAP cache
LDAPCacheTTL `seconds`	600	s	X
Time that cached items remain valid
LDAPOpCacheEntries `number`	1024	s	X
Number of entries used to cache LDAP compare operations
LDAPOpCacheTTL `seconds`	600	s	X
Time that entries in the operation cache remain valid
LDAPSharedCacheFile `directory-path/filename`		s	X
Sets the shared memory cache file
LDAPSharedCacheSize `bytes`	102400	s	X
Size in bytes of the shared-memory cache
LDAPTrustedCA `directory-path/filename`		s	X
Sets the file containing the trusted Certificate Authority certificate or database
LDAPTrustedCAType `type`		s	X
Specifies the type of the Certificate Authority file
<Limit `method` [`method`] ... > ... </Limit>		svdh	C
Restrict enclosed access controls to only certain HTTP methods
<LimitExcept `method` [`method`] ... > ... </LimitExcept>		svdh	C
Restrict access controls to all HTTP methods except the named ones
LimitInternalRecursion `number` [`number`]	10	sv	C
Determine maximum number of internal redirects and nested subrequests
LimitRequestBody `bytes`	0	svdh	C
Restricts the total size of the HTTP request body sent from the client
LimitRequestFields `number`	100	s	C
Limits the number of HTTP request header fields that will be accepted from the client
LimitRequestFieldsize `bytes`		s	C
Limits the size of the HTTP request header allowed from the client
LimitRequestLine `bytes`	8190	s	C
Limit the size of the HTTP request line that will be accepted from the client
LimitXMLRequestBody `bytes`	1000000	svdh	C
Limits the size of an XML-based request body
Listen [`IP-address`:]`portnumber`		s	M
IP addresses and ports that the server listens to
ListenBacklog `backlog`		s	M
Maximum length of the queue of pending connections
LoadFile filename [filename] ...		s	E
Link in the named object file or library
LoadModule module filename		s	E
Links in the object file or library, and adds to the list of active modules
<Location `URL-path`\|`URL`> ... </Location>		sv	C
Applies the enclosed directives only to matching URLs
<LocationMatch `regex`> ... </LocationMatch>		sv	C
Applies the enclosed directives only to regular-expression matching URLs
LockFile `filename`	logs/accept.lock	s	M
Location of the accept serialization lock file
LogFormat `format`\|`nickname` [`nickname`]	"%h %l %u %t \"%r\" +	sv	B
Describes a format for use in a log file
LogLevel `level`	warn	sv	C
Controls the verbosity of the ErrorLog
MaxClients `number`		s	M
Maximum number of child processes that will be created to serve requests
MaxKeepAliveRequests `number`	100	sv	C
Number of requests allowed on a persistent connection
MaxMemFree `KBytes`	0	s	M
Maximum amount of memory that the main allocator is allowed to hold without calling `free()`
MaxRequestsPerChild `number`	10000	s	M
Limit on the number of requests that an individual child server will handle during its life
MaxRequestsPerThread `number`	0	s	M
Limit on the number of requests that an individual thread will handle during its life
MaxSpareServers `number`	10	s	M
Maximum number of idle child server processes
MaxSpareThreads `number`		s	M
Maximum number of idle threads
MaxThreads `number`	2048	s	M
Set the maximum number of worker threads
MaxThreadsPerChild `number`	64	s	M
Maximum number of threads per child process
MCacheMaxObjectCount `value`	1009	s	X
The maximum number of objects allowed to be placed in the cache
MCacheMaxObjectSize `bytes`	10000	s	X
The maximum size (in bytes) of a document allowed in the cache
MCacheMaxStreamingBuffer `size_in_bytes`	the smaller of 1000 +	s	X
Maximum amount of a streamed response to buffer in memory before declaring the response uncacheable
MCacheMinObjectSize `bytes`	0	s	X
The minimum size (in bytes) of a document to be allowed in the cache
MCacheRemovalAlgorithm LRU\|GDSF	GDSF	s	X
The algorithm used to select documents for removal from the cache
MCacheSize `KBytes`	100	s	X
The maximum amount of memory used by the cache in KBytes
MetaDir `directory`	.web	svdh	E
Name of the directory to find CERN-style meta information files
MetaFiles on\|off	off	svdh	E
Activates CERN meta-file processing
MetaSuffix `suffix`	.meta	svdh	E
File name suffix for the file containg CERN-style meta information
MimeMagicFile `file-path`		sv	E
Enable MIME-type determination based on file contents using the specified magic file
MinSpareServers `number`	5	s	M
Minimum number of idle child server processes
MinSpareThreads `number`		s	M
Minimum number of idle threads available to handle request spikes
MMapFile `file-path` [`file-path`] ...		s	X
Map a list of files into memory at startup time
ModMimeUsePathInfo On\|Off	Off	d	B
Tells `mod_mime` to treat `path_info` components as part of the filename
MultiviewsMatch Any\|NegotiatedOnly\|Filters\|Handlers [Handlers\|Filters]	NegotiatedOnly	svdh	B
The types of files that will be included when searching for a matching file with MultiViews
NameVirtualHost `addr`[:`port`]		s	C
Designates an IP address for name-virtual hosting
NoProxy `host` [`host`] ...		sv	E
Hosts, domains, or networks that will be connected to directly
NumServers `number`	2	s	M
Total number of children alive at the same time
NWSSLTrustedCerts `filename` [`filename`] ...		s	B
List of additional client certificates
NWSSLUpgradeable [`IP-address`:]`portnumber`		s	B
Allows a connection to be upgraded to an SSL connection upon request
Options [+\|-]`option` [[+\|-]`option`] ...	All	svdh	C
Configures what features are available in a particular directory
Order `ordering`	Deny,Allow	dh	B
Controls the default access state and the order in which `Allow` and `Deny` are evaluated.
PassEnv `env-variable` [`env-variable`] ...		svdh	B
Passes environment variables from the shell
PidFile `filename`	logs/httpd.pid	s	M
File where the server records the process ID of the daemon
ProtocolEcho On\|Off		sv	X
Turn the echo server on or off
<Proxy `wildcard-url`> ...</Proxy>		sv	E
Container for directives applied to proxied resources
ProxyBadHeader IsError\|Ignore\|StartBody	IsError	sv	E
Determines how to handle bad header lines in a response
ProxyBlock *\|`word`\|`host`\|`domain` [`word`\|`host`\|`domain`] ...		sv	E
Words, hosts, or domains that are banned from being proxied
ProxyDomain `Domain`		sv	E
Default domain name for proxied requests
ProxyErrorOverride On\|Off	Off	sv	E
Override error pages for proxied content
ProxyIOBufferSize `bytes`	8192	sv	E
Determine size of internal data throughput buffer
<ProxyMatch `regex`> ...</ProxyMatch>		sv	E
Container for directives applied to regular-expression-matched proxied resources
ProxyMaxForwards `number`	10	sv	E
Maximium number of proxies that a request can be forwarded through
ProxyPass [`path`] !\|`url`		svd	E
Maps remote servers into the local server URL-space
ProxyPassReverse [`path`] `url`		svd	E
Adjusts the URL in HTTP response headers sent from a reverse proxied server
ProxyPreserveHost On\|Off	Off	sv	E
Use incoming Host HTTP request header for proxy request
ProxyReceiveBufferSize `bytes`	0	sv	E
Network buffer size for proxied HTTP and FTP connections
ProxyRemote `match` `remote-server`		sv	E
Remote proxy used to handle certain requests
ProxyRemoteMatch `regex` `remote-server`		sv	E
Remote proxy used to handle requests matched by regular expressions
ProxyRequests On\|Off	Off	sv	E
Enables forward (standard) proxy requests
ProxyTimeout `seconds`	300	sv	E
Network timeout for proxied requests
ProxyVia On\|Off\|Full\|Block	Off	sv	E
Information provided in the `Via` HTTP response header for proxied requests
ReadmeName `filename`		svdh	B
Name of the file that will be inserted at the end of the index listing
Redirect [`status`] `URL-path` `URL`		svdh	B
Sends an external redirect asking the client to fetch a different URL
RedirectMatch [`status`] `regex` `URL`		svdh	B
Sends an external redirect based on a regular expression match of the current URL
RedirectPermanent `URL-path` `URL`		svdh	B
Sends an external permanent redirect asking the client to fetch a different URL
RedirectTemp `URL-path` `URL`		svdh	B
Sends an external temporary redirect asking the client to fetch a different URL
RemoveCharset `extension` [`extension`] ...		vdh	B
Removes any character set associations for a set of file extensions
RemoveEncoding `extension` [`extension`] ...		vdh	B
Removes any content encoding associations for a set of file extensions
RemoveHandler `extension` [`extension`] ...		vdh	B
Removes any handler associations for a set of file extensions
RemoveInputFilter `extension` [`extension`] ...		vdh	B
Removes any input filter associations for a set of file extensions
RemoveLanguage `extension` [`extension`] ...		vdh	B
Removes any language associations for a set of file extensions
RemoveOutputFilter `extension` [`extension`] ...		vdh	B
Removes any output filter associations for a set of file extensions
RemoveType `extension` [`extension`] ...		vdh	B
Removes any content type associations for a set of file extensions
RequestHeader set\|append\|add\|unset `header` [`value`]		svdh	E
Configure HTTP request headers
Require `entity-name` [`entity-name`] ...		dh	C
Selects which authenticated users can access a resource
RewriteBase URL-path		dh	E
Sets the base URL for per-directory rewrites
RewriteCond TestString CondPattern		svdh	E
Defines a condition under which rewriting will take place
RewriteEngine on\|off	off	svdh	E
Enables or disables runtime rewriting engine
RewriteLock file-path		s	E
Sets the name of the lock file used for `RewriteMap` synchronization
RewriteLog file-path		sv	E
Sets the name of the file used for logging rewrite engine processing
RewriteLogLevel Level	0	sv	E
Sets the verbosity of the log file used by the rewrite engine
RewriteMap MapName MapType:MapSource		sv	E
Defines a mapping function for key-lookup
RewriteOptions `Options`	MaxRedirects=10	svdh	E
Sets some special options for the rewrite engine
RewriteRule Pattern Substitution		svdh	E
Defines rules for the rewriting engine
RLimitCPU `seconds`\|max [`seconds`\|max]		svdh	C
Limits the CPU consumption of processes launched by Apache children
RLimitMEM `bytes`\|max [`bytes`\|max]		svdh	C
Limits the memory consumption of processes launched by Apache children
RLimitNPROC `number`\|max [`number`\|max]		svdh	C
Limits the number of processes that can be launched by processes launched by Apache children
Satisfy Any\|All	All	dh	C
Interaction between host-level access control and user authentication
ScoreBoardFile `file-path`	logs/apache_status	s	M
Location of the file used to store coordination data for the child processes
Script `method` `cgi-script`		svd	B
Activates a CGI script for a particular request method.
ScriptAlias `URL-path` `file-path`\|`directory-path`		sv	B
Maps a URL to a filesystem location and designates the target as a CGI script
ScriptAliasMatch `regex` `file-path`\|`directory-path`		sv	B
Maps a URL to a filesystem location using a regular expression and designates the target as a CGI script
ScriptInterpreterSource Registry\|Registry-Strict\|Script	Script	svdh	C
Technique for locating the interpreter for CGI scripts
ScriptLog `file-path`		sv	B
Location of the CGI script error logfile
ScriptLogBuffer `bytes`	1024	sv	B
Maximum amount of PUT or POST requests that will be recorded in the scriptlog
ScriptLogLength `bytes`	10385760	sv	B
Size limit of the CGI script logfile
ScriptSock `file-path`	logs/cgisock	sv	B
The name of the socket to use for communication with the cgi daemon
SecureListen [`IP-address`:]`portnumber` `Certificate-Name` [MUTUAL]		s	B
Enables SSL encryption for the specified port
SendBufferSize `bytes`	0	s	M
TCP buffer size
ServerAdmin `email-address`		sv	C
Email address that the server includes in error messages sent to the client
ServerAlias `hostname` [`hostname`] ...		v	C
Alternate names for a host used when matching requests to name-virtual hosts
ServerLimit `number`		s	M
Upper limit on configurable number of processes
ServerName `fully-qualified-domain-name`[:`port`]		sv	C
Hostname and port that the server uses to identify itself
ServerPath `URL-path`		v	C
Legacy URL pathname for a name-based virtual host that is accessed by an incompatible browser
ServerRoot `directory-path`	/usr/local/apache	s	C
Base directory for the server installation
ServerSignature On\|Off\|EMail	Off	svdh	C
Configures the footer on server-generated documents
ServerTokens Major\|Minor\|Min[imal]\|Prod[uctOnly]\|OS\|Full	Full	s	C
Configures the `Server` HTTP response header
SetEnv `env-variable` `value`		svdh	B
Sets environment variables
SetEnvIf attribute regex [!]env-variable[=value] [[!]env-variable[=value]] ...		svdh	B
Sets environment variables based on attributes of the request
SetEnvIfNoCase attribute regex [!]env-variable[=value] [[!]env-variable[=value]] ...		svdh	B
Sets environment variables based on attributes of the request without respect to case
SetHandler `handler-name`\|None		svdh	C
Forces all matching files to be processed by a handler
SetInputFilter `filter`[;`filter`...]		svdh	C
Sets the filters that will process client requests and POST input
SetOutputFilter `filter`[;`filter`...]		svdh	C
Sets the filters that will process responses from the server
SSIEndTag `tag`	"-->"	sv	B
String that ends an include element
SSIErrorMsg `message`	"[an error occurred +	svdh	B
Error message displayed when there is an SSI error
SSIStartTag `tag`	"<!--#"	sv	B
String that starts an include element
SSITimeFormat `formatstring`	"%A, %d-%b-%Y %H:%M +	svdh	B
Configures the format in which date strings are displayed
SSIUndefinedEcho `string`	"(none)"	sv	B
String displayed when an unset variable is echoed
SSLCACertificateFile file-path		sv	E
File of concatenated PEM-encoded CA Certificates for Client Auth
SSLCACertificatePath directory-path		sv	E
Directory of PEM-encoded CA Certificates for Client Auth
SSLCARevocationFile file-path		sv	E
File of concatenated PEM-encoded CA CRLs for Client Auth
SSLCARevocationPath directory-path		sv	E
Directory of PEM-encoded CA CRLs for Client Auth
SSLCertificateChainFile file-path		sv	E
File of PEM-encoded Server CA Certificates
SSLCertificateFile file-path		sv	E
Server PEM-encoded X.509 Certificate file
SSLCertificateKeyFile file-path		sv	E
Server PEM-encoded Private Key file
SSLCipherSuite cipher-spec	ALL:!ADH:RC4+RSA:+H +	svdh	E
Cipher Suite available for negotiation in SSL handshake
SSLEngine on\|off	off	sv	E
SSL Engine Operation Switch
SSLMutex type	none	s	E
Semaphore for internal mutual exclusion of operations
SSLOptions [+\|-]option ...		svdh	E
Configure various SSL engine run-time options
SSLPassPhraseDialog type	builtin	s	E
Type of pass phrase dialog for encrypted private keys
SSLProtocol [+\|-]protocol ...	all	sv	E
Configure usable SSL protocol flavors
SSLProxyCACertificateFile file-path		sv	E
File of concatenated PEM-encoded CA Certificates for Remote Server Auth
SSLProxyCACertificatePath directory-path		sv	E
Directory of PEM-encoded CA Certificates for Remote Server Auth
SSLProxyCARevocationFile file-path		sv	E
File of concatenated PEM-encoded CA CRLs for Remote Server Auth
SSLProxyCARevocationPath directory-path		sv	E
Directory of PEM-encoded CA CRLs for Remote Server Auth
SSLProxyCipherSuite cipher-spec	ALL:!ADH:RC4+RSA:+H +	svdh	E
Cipher Suite available for negotiation in SSL proxy handshake
SSLProxyEngine on\|off	off	sv	E
SSL Proxy Engine Operation Switch
SSLProxyMachineCertificateFile filename		s	E
File of concatenated PEM-encoded client certificates and keys to be used by the proxy
SSLProxyMachineCertificatePath directory		s	E
Directory of PEM-encoded client certificates and keys to be used by the proxy
SSLProxyProtocol [+\|-]protocol ...	all	sv	E
Configure usable SSL protocol flavors for proxy usage
SSLProxyVerify level	none	svdh	E
Type of remote server Certificate verification
SSLProxyVerifyDepth number	1	svdh	E
Maximum depth of CA Certificates in Remote Server Certificate verification
SSLRandomSeed context source [bytes]		s	E
Pseudo Random Number Generator (PRNG) seeding source
SSLRequire expression		dh	E
Allow access only when an arbitrarily complex boolean expression is true
SSLRequireSSL		dh	E
Deny access when SSL is not used for the HTTP request
SSLSessionCache type	none	s	E
Type of the global/inter-process SSL Session Cache
SSLSessionCacheTimeout seconds	300	sv	E
Number of seconds before an SSL session expires in the Session Cache
SSLVerifyClient level	none	svdh	E
Type of Client Certificate verification
SSLVerifyDepth number	1	svdh	E
Maximum depth of CA Certificates in Client Certificate verification
StartServers `number`		s	M
Number of child server processes created at startup
StartThreads `number`		s	M
Number of threads created on startup
SuexecUserGroup User Group		sv	E
User and group permissions for CGI programs
ThreadLimit `number`		s	M
Sets the upper limit on the configurable number of threads per child process
ThreadsPerChild `number`		s	M
Number of threads created by each child process
ThreadStackSize `number`	65536	s	M
Determine the stack size for each thread
TimeOut `seconds`	300	s	C
Amount of time the server will wait for certain events before failing a request
TransferLog `file`\|`pipe`		sv	B
Specify location of a log file
TypesConfig `file-path`	conf/mime.types	s	B
The location of the `mime.types` file
UnsetEnv `env-variable` [`env-variable`] ...		svdh	B
Removes variables from the environment
UseCanonicalName On\|Off\|DNS	On	svd	C
Configures how the server determines its own name and port
User `unix-userid`	#-1	s	M
The userid under which the server will answer requests
UserDir directory-filename	public_html	sv	B
Location of the user-specific directories
VirtualDocumentRoot interpolated-directory\|none	none	sv	E
Dynamically configure the location of the document root for a given virtual host
VirtualDocumentRootIP interpolated-directory\|none	none	sv	E
Dynamically configure the location of the document root for a given virtual host
<VirtualHost `addr`[:`port`] [`addr`[:`port`]] ...> ... </VirtualHost>		s	C
Contains directives that apply only to a specific hostname or IP address
VirtualScriptAlias interpolated-directory\|none	none	sv	E
Dynamically configure the location of the CGI directory for a given virtual host
VirtualScriptAliasIP interpolated-directory\|none	none	sv	E
Dynamically configure the location of the cgi directory for a given virtual host
Win32DisableAcceptEx		s	M
Use accept() rather than AcceptEx() to accept network connections
XBitHack on\|off\|full	off	svdh	B
Parse SSI directives in files with the execute bit set