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{{FAQ header}}

==Installation and configuration==
===Where do I download MediaWiki?===
The latest stable release of MediaWiki can be downloaded from [http://download.wikimedia.org/mediawiki/ download.wikimedia.org]. Files are supplied in a [[:en:Tar (file format)|.tar]][[:en:gzip|.gz]] archive. MediaWiki can also be [[download from SVN|obtained direct from our Subversion]] repository. See also ''[[Download]]''

===How do I install MediaWiki?===
Installing MediaWiki takes between 10 and 30 minutes, and involves uploading/copying files, and running the installer script to configure the software - see [[Installation]].

Full instructions can be found in the <tt>'''INSTALL'''</tt> file supplied in the distribution archive.

===How do I install MediaWiki using a package?===
Many Linux distributions provide MediaWiki in a packaged format for that distribution. The MediaWiki development team refers you to your Linux distribution for assistance with installing, configuring or using them. The individual communities & companies who maintain such packages should provide installation instructions.
<!-- add links here for the distributions? For example:

Debian:
apt-get install mediawiki
Redhat:
yum install mediawiki
-->

===Can I install more than one wiki on a server using MediaWiki?===
It is possible to install more than one wiki on a server provided that:

*You use a different database for each wiki
OR
*You use a different database prefix for each wiki (for Postgres, you can achieve a similar effect by using different schemas and users)

For information on these options, see '''[[Manual:$wgDBname|$wgDBname]]''' and '''[[Manual:$wgDBprefix|$wgDBprefix]]''' respectively.

For information on setting up a wiki family, see [[Manual:Wiki family]].

For information on an alternative way of setting up more than one wiki using the same server, database and source, see [http://www.steverumberg.com/wiki/index.php/WikiHelp Steve Rumberg's] ([http://web.archive.org/web/20070715020649/http://www.steverumberg.com/wiki/index.php/WikiHelp archived version]) excellent expose and additional comments from users.

===Does MediaWiki work with safe_mode enabled?===
Yes, but only to a limited degree. See [[Safe mode]].

===Does MediaWiki require shell access?===
Shell access (SSH access) is not required for installing MediaWiki, but it is ''highly recommended''. Without shell access, it may even be difficult for you to get a backup of your wiki, or to upgrade to a new version. Some maintenance tasks will not be possible at all without shell access.

===How do I install extensions?===
See [[Manual:Extensions]] for information about installing extensions, as well as writing them. See the [[Extension Matrix]] and the [[:Category:Extensions]] to find existing extensions.

===How do I add extra namespaces?===
To add a [[Manual:Namespace|namespace]], modify your '''[[Manual:LocalSettings.php|LocalSettings.php]]''' file, and add namespaces via '''[[Manual:$wgExtraNamespaces|$wgExtraNamespaces]]'''. You can add the following code to add a "Portal" namespace, and its corresponding discussion namespace:

:<tt>$wgExtraNamespaces = array(100 => "Portal", 101 => "Portal_talk");</tt>

{{note}} Be sure to add underscores instead of spaces, such as in <tt>Portal_talk</tt>. Otherwise, the namespace will not be declared properly!

===How do I enable uploading?===
File uploads are an often-used feature of MediaWiki, but are disabled by default in all current release versions. To enable them, first make the upload directory (default <tt>images</tt>) writable by the web server (chmod 777 or allow the Apache user to write to it, etc.) then set '''[[Manual:$wgEnableUploads|$wgEnableUploads]]''' to <tt>true</tt> in LocalSettings.php ''(i.e. "$wgEnableUploads = true;")''. See '''[[Manual:Configuring file uploads]]''' for more information.

===How do I enable embedded math formulas?===
MediaWiki allows embedded math formulas via a helper program called texvc that uses LaTeX to render the formulas. See [[Manual:Math]] for setup instructions.

===How do I purge a cached page?===
To purge a cached page, such as when making changes to the navigation bar, add <code>&action=purge</code> to the end of the page's dynamic URL.

e.g. http://www.mediawiki.org/w/index.php?title=Main_Page&action=purge

or <code>?action=purge</code> to the end of the page's short form URL:

e.g. http://www.mediawiki.org/wiki/Main_Page?action=purge

See also: [[Manual:Purge]], [[Manual:Parameters to index.php]]

===How do I allow uploading of additional formats?===
MediaWiki requires that allowed file upload formats are specified using the '''[[Manual:$wgFileExtensions|$wgFileExtensions]]''' configuration directive. Usually this directive is situated in LocalSettings.php in the root of your MediaWiki installation.

For example, to allow uploading of PDF files, add the following to LocalSettings.php:
<source lang="php">
$wgFileExtensions[] = 'pdf';
</source>

{{note}} The syntax is different to allow uploading of more than one type of file.
To do so, use an array as in the example below which will allow uploading of png, gif, jpg, jpeg, pdf, and txt files.
<source lang="php">
$wgFileExtensions = array( 'png', 'gif', 'jpg', 'jpeg', 'pdf', 'txt' );
</source>

See '''[[Manual:Configuring file uploads]]''' for more information.

==="File is corrupt or has an invalid extension"===
Some users have reported that after adding a file format to the allowed extensions list, an error is encountered. The text of the error is similar to the following:

:''The file is corrupt or has an incorrect extension. Please check the file and upload again.''

'''Possible solutions:'''

*Set the value of '''[[Manual:$wgMimeDetectorCommand|$wgMimeDetectorCommand]]''', e.g. under Unix or Linux, this would be
*:<tt>$wgMimeDetectorCommand = "file --brief --mime";</tt>
*Compile/install the '''[http://pecl.php.net/package/fileinfo fileinfo]''' PHP extension 
**Fedora - yum install php-pecl-Fileinfo

See '''[[Manual:Mime type detection]]''' for more information.

===Initial user was not created by installer===
Sometimes, the installer fails to create the default user, or the user table is lost for some reason. There are a couple of options for solving this:

====maintenance/createAndPromote.php====
*Make sure <tt>AdminSettings.php</tt> is set up (see <tt>AdminSettings.sample</tt>)
*Execute <tt>maintenance/createAndPromote.php</tt> from the shell

This will create a new user and promote them to an administrator. For help, run the script with the parameter <tt>--help</tt>.

====Alter the database====
*Register a new account using the regular method ([[Special:Userlogin]]).
*Check the user ID in [[Special:Preferences]].
*Execute the following SQL statement against the database:
**For MediaWiki 1.5 and later:<br /> <code>INSERT INTO user_groups ( ug_user, ug_group ) VALUES ( ''<id>'', 'bureaucrat' ), ( ''<id>'', 'sysop' );</code>
**For MediaWiki 1.4:<br /> <code>UPDATE user_rights SET ur_rights = 'sysop,bureaucrat' WHERE ur_user = <id>;</code>
**For MediaWiki 1.3 and older:<br /> <code>UPDATE user SET user_rights = 'sysop,bureaucrat' WHERE user_id = <id>;</code>
<code>''<id>''</code> above should be replaced with the appropriate user ID which you can see on the user's preference page

===How do I reset a password?===
You can use the <tt>maintenance/changePassword.php</tt> [[Manual:Maintenance scripts|maintenance script]] to reset a user's password.

'''You have to run the script from the command line.'''  In other words, log into the server where your wiki is installed, then open a command prompt.  Go to the installation directory, then go to the maintenance subdirectory.  Run the following command:

 php changePassword.php --user=someuser --password=somepass

Where obviously "somepass" is changed to the password you want to set and "someuser" is changed to the user name as it is listed in the table "user".

You can also use the old way, by modifying the database directly. Assuming that <var>$wgPasswordSalt</var> is set to true (the default), you can use the following SQL query for '''MySQL''':

<source lang="sql">
 UPDATE user SET user_password = MD5(CONCAT(user_id, '-', 
   MD5('somepass'))) WHERE user_name = 'someuser';
</source>
Where obviously "somepass" is changed to the password you want to set and "someuser" is changed to the user name as it is listed in the table "user".

{{note}} The <tt>user_id</tt> in the CONCAT string is a column name and is not meant to be replaced with 'someuser'

{{note}} If you obtain a 'dbname.user table does not exist' error, please check the [[Manual:LocalSettings.php|LocalSettings.php]] file, and double-check the value for the [[Manual:$wgDBprefix|$wgDBprefix]] variable. If that variable is not empty, try repeating the command, replacing  <tt>$wgDBPrefix_user</tt> instead of <tt>user</tt> in the <tt>UPDATE</tt> clause of the SQL statement.

If using '''PostGreSQL''', use this query instead:
<source lang="sql">
  UPDATE mwuser SET user_password =
    md5(user_id || '-' || md5('somepass')) WHERE user_name='someuser';
</source>

You can also try the '''[[Extension:Password Reset|Password Reset extension]]'''.

===How can I create Interwiki Links in my Wiki?===
====DB Expert Answer====
If the external wiki you are interested is Wikipedia, and you wish to use the prefix "wp" to link to it (prefix "wikipedia" is the default interwiki prefix for Wikipedia, see [[Help:Interwiki linking]] for other defaults), run this SQL statement to modify the [[Interwiki table]] in your database:
<source lang="sql">INSERT INTO interwiki (iw_prefix, iw_url, iw_local, iw_trans) VALUES ('wp', 'http://en.wikipedia.org/wiki/$1', '0', '0');</source>
The $1 indicates the article name on the external wiki.

===='''Typical-User Answer'''====
In a graphical SQL program (i.e. PhpMyAdmin), go to the [[interwiki table]]. Choose the option to insert (a row). In the [[Interwiki table#iw_prefix|iw_prefix]] field, enter your desired interwiki prefix. In the [[Interwiki table#iw_url|iw_url]] field, enter the Base URL of the '''''external''''' wiki plus the text "$1" as mentioned in the DB Expert Answer above. [[Interwiki table#iw_local|iw_local]] and [[Interwiki table#iw_trans|iw_trans]] have default values of zero (0). You may leave them as zero.

For '''''more''''' '''information''', see [[Help:Interwiki linking]]

===='''Easy Answer'''====
Install the [[Extension:SpecialInterwiki|Special:Interwiki]] extension. You can then add and remove interwiki entries through the Special:Interwiki special page.

===How do I make my base URLs shorter? (i.e. /wiki/Article_Name as opposed to /w/index.php?title=Article_Name) ===
See [[Manual:Short URL]].

===Is downloading and using all of MediaWiki.org free?===
Yes, it is free in the sense of [[:en:Free software|Free software]]. See [[Project:Copyrights]] for licensing issues regarding the written content of this site.

===How do I administrate/manage user rights?===
<span id="How_do_I_administrate.2Fmanage_my_users.3F"><!-- compatibility anchor --></span>
See [[Manual:User rights]] and [[Manual:User rights management]] for general information. See [[Manual:Preventing access]] for methods and strategies for restricting access.

====How to restrict anonymous users from editing any page====
*Set <nowiki>$wgGroupPermissions['*']['edit'] = false;</nowiki> at bottom of LocalSettings.php. 
See [[Manual:Preventing access#Restrict anonymous editing]] for more information.

====How to restrict anonymous users from reading any page====
*Set <nowiki>$wgGroupPermissions['*']['read'] = false;</nowiki> at bottom of LocalSettings.php.
See also [[Manual:$wgWhitelistRead]]. See [[Manual:Preventing access#Restrict viewing of all pages]] for more information.

====How to I restrict account creation====
*Set $wgGroupPermissions['*']['createaccount'] = false; at bottom of LocalSettings.php.
See [[Manual:Preventing access#Restrict account creation]] for more information.

==Upgrading==
Generic instructions on the upgrade process can be found in the '''<tt>UPGRADE</tt>''' file supplied with the software. See also ''[[Manual:Upgrading]]''.

==Changing the interface==
===How do I change the logo?===
The logo that appears in the top left of each page is determined by the [[Manual:$wgLogo|$wgLogo]] configuration line in the ''LocalSettings.php'' file.

There are two ways to change the logo:

Upload a picture with your wiki and use that address. This allows the photo to be replaced easily, so you may want to protect the page if you use this method. 

Then add the $wgLogo line to ''LocalSettings.php'', for example:

 $wgLogo = 'http://yourwiki.org/wiki/images/6/62/photoname.jpg'; 

Or uploaded an image to your server by other means (such as FTP). Add the $wgLogo line to ''LocalSettings.php'', for example: 

 $wgLogo = 'photoname.jpg'; 

In this example, the photo is in the same folder as the LocalSettings.php file.  

It is generally a good idea to place this at the end of LocalSettings.php (before the ?> however), especially if you are using a variable such as $wgStylePath or $wgUploadPath.

{{caution}} It is possible to simply overwrite the default logo installed with MediaWiki (<code>/skins/common/images/wiki.png</code>), but this is strongly advised against, as an upgrade may end up overwriting it or change the default location of this file.

''Tip: The logo image should be 135 x 135 pixels.''

===How do I customize the logo in the top left corner? Can I?===
The logo is a portlet block without a pBody section.  It is identified by the p-logo id.  The background image is specified by the '''wgLogo''' variable, which is defined in /includes/DefaultSettings.php. This location is relative to the web server root and not the system root. Redefine this in /[[LocalSettings.php]] to change the image. If set wrong there will be no image on the page; check your web server error log and adjust accordingly. However the size of the p-logo will need to be big enough for the logo if it is not to be clipped.  This is set in the stylesheet (Main.css in monobook), under the p-logo style, the default setting is:

<source lang="css">
#p-logo {
    z-index: 3;
    position:absolute; /*needed to use z-index */
    top: 0;
    left: 0;
    height: 155px;
    width: 12em;
    overflow: visible;
}
</source>

===How do I customize the URL of the logo in the top left corner when you click it?===
By default, clicking the logo takes you to the main page. If you want to change which page is the main page, edit [[MediaWiki:Mainpage]]. Or to make the link go to any arbitrary URL, for Monobook skin, edit Monobook.php and find and replace <code><?php echo htmlspecialchars($this->data['nav_urls']['mainpage']['href'])?></code> with the URL of your choice and replace <code><?php $this->msg('mainpage') ?></code> with the desired link title.

===Reducing the size of the logo===
Note that a tag is on top of the logo so if you are trying to reduce the size of the logo's portlet you will also need to change the #p-logo a and #p-logo a:hover rules. The default setting for these is:
<source lang="css">
#p-logo a,
#p-logo a:hover {
   display: block;
   height: 200px;
   width: 12.2em;
   background-repeat: no-repeat;
   background-position: 35% 50% !important;
   text-decoration: none;
}
</source>

This simple customization will re-define the size of all of them at once...
<source lang="css">
#p-logo,
#p-logo a,
#p-logo a:hover {
   height: 75px;
}
</source>
There is one more rule controlling the amount of space between the logo and first portlet in the side column - the padding on the top of #column-one. By default this is:
<source lang="css">
#column-one { padding-top: 160px; }
</source>
If you want to remove the logo completely, comment out the '''wgLogo''' variable. Then set the column-one padding to a small value, such as 21:
<source lang="css">
#column-one { padding-top: 21px; }
</source>

You shouldn't edit the CSS file directly. You need go to <Your Wiki URL>?title=MediaWiki:Monobook.css. Hit edit and make your changes there. The content of MediaWiki:Monobook.css page always overrides the default main.css file's contents.

===How do I change the icon in the browser's address line (favicon)?===
*Simple upload your favicon.ico to the root of your domain/subdomain, make sure file name is in lower case and its name is favicon.ico
*Alternatively edit the [[Manual:$wgFavicon|$wgFavicon]] setting in ''LocalSettings.php'' and add <tt>$wgFavicon = "$wgScriptPath/path/to/your/favicon.ico";</tt>

See [[Manual:$wgFavicon]] for more details.

''Tip: The favicon image should be either 16 x 16 pixels or 32 x 32 pixels.''

====Rewrite Rule====
If you are using a rewrite rule in .htaccess to remove "index.php" from the URL, you will also need to add an exception for .ico files. Simply add the following rule to your .htaccess:

:RewriteRule .*\.ico$ - [L]

This rule must appear ''before'' the index.php rule.

====Case Sensitivity====
When uploading the favicon file, be sure the filename is in lowercase. (That is, "favicon.ico", not "Favicon.ico".) A lot of servers (e.g., those on UNIX-like operating systems) will not be able to find the file unless its name is in lowercase.

===How do I customize the navigation bar?===
The contents of the navigation bar which appears to the left of each page using the Monobook skin are determined by the '''[[MediaWiki:Sidebar]]''' page there on your wiki. For information on customising these, please see [[Manual:Navigation bar]].

===How do I put a text message (sitenotice) on every page?===
Put a text in the '''[[MediaWiki:Sitenotice]]''' page. It will be displayed on top of every article page.

===How do I change which page is the main page?===
By default, MediaWiki looks for a page with the title ''Main Page'' and serves this as the default page. This can be changed by altering the contents of '''[[MediaWiki:Mainpage]]''' to point to a different title. If this does not change the 'Main Page' link included on the sidebar at install time, edit '''[[MediaWiki:Sidebar]]'''.

===How do I hide the main page title?===
MediaWiki does not have a built-in option to hide the main page title (see [[MediaZilla:6129|bug 6129]]). Instead you must use JavaScript or CSS.

====MediaWiki version before 1.9, solution to hide the main page title====
Before MediaWiki 1.9, you have two options:

=====Apply the patch=====
You can manually apply the patch from [[rev:17119|r17119]] to your copy of MediaWiki and use the solution for 1.9. 

FIRST replace or add the lines in three files in the correct place as [[rev:17119|r17119]] did: 
* skins/monobook/Skin.php, add: 
:<code>$a['class'] = 'ns-'.$wgTitle->getNamespace().' </code>
:<code>'.($wgContLang->isRTL() ? "rtl" : "ltr").</code>
:<code>' page-'.Sanitizer::escapeId( $wgTitle->getPrefixedText() );</code>
* includes/SkinTemplate.php, add: 
:<code> $tpl->set( 'pageclass', 'page-'.Sanitizer::escapeId( $wgTitle->getPrefixedText() ) );</code>
* includes/MonoBook.php replace: 
:<code>class="<?php $this->text('nsclass') ?> <?php $this->text('dir') ?>"></code>
:with:
:<code>class="mediawiki <?php $this->text('nsclass') ?> <?php $this->text('dir') ?> <?php $this->text('pageclass') ?>"></code>


SECOND follow the instructions in [[#1.9 and above]].

=====JavaScript solution=====
The following JavaScript may or may not work for your wiki (replace "Main Page" with the name of your main page if it differs). Add the code to your wiki's [[MediaWiki:Common.js]] or MediaWiki:Monobook.js (Monobook.js for older wikis, Common.js for newer wikis):

<source lang="javascript">
var isMainPage = (document.title.substr(0, document.title.lastIndexOf(" - ")) == "Main Page");
var isDiff = (document.location.search &&
                 (document.location.search.indexOf("diff=") != -1 ||
                     document.location.search.indexOf("oldid=") != -1
                 )
             );
if (isMainPage && !isDiff) {
    document.write('<style type="text/css">/*<![CDATA[*/ h1.firstHeading { display: none !important; } /*]]>*/</style>');
}
</source>

====Mediawiki version 1.9+, solution to hide the main page title====
In 1.9 and above (or with the modified files above), you can use [[w:Cascading Style Sheets|CSS]] to hide the main page title.  

Add the following to the [[MediaWiki:Monobook.css]] (if you're using Monobook; otherwise add this to [[MediaWiki:Common.css]] to have it applied to all skins) on your wiki: 

<source lang="css">
body.page-Main_Page h1.firstHeading { display:none; }
</source>

Alternatively, you can replace "Main_Page" with another name, but with spaces replaced by underscores _ .

====Troubleshooting====
If this doesn't work, look at the HTML source code to find the correct class to replace "page-Main_Page" with:

<source lang="html4strict">
<body class="mediawiki ns-0 ltr page-Some_title">
</source>

If no such class exists, then you cannot use this feature.  You may be using a custom or outdated skin.

Another option is to <nowiki>#REDIRECT</nowiki> from Main_Page to Our_Main_Page.

See also [[Wikipedia:Main Page alternatives]].

===How can I hide the table of contents?===
The table of contents (TOC) is automatically shown once there are four or more headings in the article. The are multiple ways to hide it.

; For one page
: Place the magic word <tt>'''<nowiki>__NOTOC__</nowiki>'''</tt> into the page markup.
; For all pages
: Add the following rule to [[MediaWiki:Common.css]]: <source lang="css">.toc, #toc { display: none; }</source>
; Per user
: Users can also opt to have the table of contents hidden. This is a user preference, set in '''[[Special:Preferences]]'''.

===How do I change the interface text?===
Interface text is altered using the MediaWiki namespace. For each deviation from the default in the site language there is a page MediaWiki:''Englishmessagename'', and for each deviation from the default in each other language a page MediaWiki:''Englishmessagename''/''languagecode''. (Since release 1.9 there are no pages for messages equal to the default.). On creation of a page the edit box autofills with the default. When creating a page to override the default it is useful to first save the default version, to allow diffs with it. See also [[Manual:System messages]].

*For a list of system messages, see '''[[Special:Allmessages]]'''
*To switch ''off'' the MediaWiki namespace, see the '''[[Manual:$wgUseDatabaseMessages|$wgUseDatabaseMessages]]''' configuration setting
*To remove the ''Privacy policy'' or ''Disclaimers'' links at the bottom of each page, set the content of pages '''[[MediaWiki:Privacy]]''' or '''[[MediaWiki:Disclaimers]]''' respectively to a single minus sign.

===How do I change the interface language?===
To change the default interface language, alter the value of <tt>[[Manual:$wgLanguageCode|$wgLanguageCode]]</tt> in <tt>LocalSettings.php</tt>, e.g.

:<code>$wgLanguageCode = "fr";</code>

===How can I prevent editing by anonymous users?===
The recommended method is by changing the value of the <code>[[Manual:$wgGroupPermissions|$wgGroupPermissions]]</code> configuration option.  Edit <code>[[LocalSettings.php]]</code> and add the line:

<source lang="php">$wgGroupPermissions['*']['edit'] = false;</source>

For more information on using this option, see the [[Preventing Access|Preventing access]] page and [[Manual:User rights]].

===How do I remove the article/edit etc tabs for users who are not logged in?===
Edit <nowiki>[[MediaWiki:Monobook.css]]</nowiki> on your wiki, and add this:

 #ca-edit { display: none; }

See the page source for the various #ca-* ids used in the content tabs.

Note: this will only work for MonoBook (the default skin), and doesn't actually stop people editing.

===How do I add/remove tabs throughout my wiki?===
For example, to remove the talk tab and then add a tab that always goes to the main page you would save this code in <code>extensions/AR-Tabs.php</code>:
<source lang="php">
 <?php
 $wgHooks['SkinTemplateContentActions'][] = 'ReplaceTabs';
 function ReplaceTabs ($content_actions) {  
     unset( $content_actions['talk'] );    //only this to remove an action
     $maintitle = Title::newFromText(wfMsg('mainpage') );
      $main_action['main'] = array(
        'class' => false or 'selected',    //if the tab should be highlighted
        'text' => wfMsg('sitetitle'),     //what the tab says
        'href' => $maintitle->getFullURL(),   //where it links to
      );
      $content_actions = array_merge( $main_action, $content_actions);   //add a new action
      return true;
 }
 ?>
</source>
and then add
<source lang="php">require_once("extensions/AR-Tabs.php");</source>
to the bottom of LocalSettings.php

====How do I remove a tab on only one page?====
''This solution works in MediaWiki version 1.9 and above. In MediaWiki version 1.8 or below, first [[Manual:FAQ#Apply the patch|apply the above patch]].''

For example, to remove the Discussion (talk) page tab from the Main Page, on the [[MediaWiki:Monobook.css]] page add: 
<source lang="css">
.page-Main_Page #ca-talk { display: none !important; }
</source>

To modify [[MediaWiki:Monobook.css]] you must have administrative privileges.

====How do I remove a tab on all pages====
''This solution works in MediaWiki version 1.9 and above. In MediaWiki version 1.8 or below, first  [[Manual:FAQ#Apply the patch|apply the above patch]].''

For example, to remove the Discussion (talk) page tab on all wikipages, on the [[MediaWiki:Monobook.css]] page add: 

<source lang="css">
#ca-talk { display:none!important; }
</source>

Other tabs to remove are '''#ca-history''' and '''#ca-viewsource'''. To modify [[MediaWiki:Monobook.css]] you must have administrative privileges.

===How do I hide the section edit links for users who are not logged in?===
#The recommended method is by changing the value of the <code>[[Manual:$wgDefaultUserOptions|$wgDefaultUserOptions]]</code> configuration option.<br />Edit <code>[[LocalSettings.php]]</code> and add the line:<br /><source lang="php">$wgDefaultUserOptions ['editsection'] = false;</source>
#Alternatively you could manually edit each skin (e.g. <code>MonoBook.php</code>) and add this before <code></head></code>:

<blockquote>
<source lang="php">
<?php if(!$this->data['loggedin']) { ?>
      <style>
        .editsection { display: none; }
      </style>
<?php } ?>
</source>
</blockquote>

:If you want to hide the links for all users including logged in users, instead edit <code>monobook/main.css</code> ('''not recommended!'') and add:
:<source lang="css">.editsection { display: none; }</source>

:Also see [[#How can I prevent editing by anonymous users?|How can I prevent editing by anonymous users?]]

===How do I remove the "Talk for this IP" link at the top right when [[Manual:$wgDisableAnonTalk|$wgDisableAnonTalk]] is true?===
Set [[Manual:$wgShowIPinHeader|$wgShowIPinHeader]] to false.

===How do I remove the "Create an Account or Login" link at the top right of the screen?===
In Monobook.php change this statement:
<source lang="php">
  foreach($this->data['personal_urls'] as $key => $item) {
</source>
to:
<source lang="php">
 foreach($this->data['personal_urls'] as $key => $item)  if($this->data['loggedin']==1) {
</source>

===How do I change the footer?===
To add or remove items from the footer on your MediaWiki page, you must edit the skin. 

For example: if you go in to MonoBook.php (located by default in the <tt>skins</tt> folder) you will find the following code:

<source lang="php">
 $footerlinks = array(
   'lastmod', 'viewcount', 'numberofwatchingusers', 'credits', 'copyright',
   'privacy', 'about', 'disclaimer', 'tagline',
  );
</source>

In the above you can simply add and remove items from the footer that you wish to appear in your footer. Remember the changes may not appear immediatly because of [[File cache|MediaWiki caches]].

You can also customize the individual items by modifying certain pages or parameters:
*lastmod - edit [[MediaWiki:Lastmodifiedat]] (verison 1.8 and after) or [[MediaWiki:Lastmodified]] (version 1.7 and before). If [[Manual:$wgMaxCredits|$wgMaxCredits]] is enabled, then edit [[MediaWiki:Lastmodifiedatby]] (verison 1.8 and after) or [[MediaWiki:lastmodifiedby]] (version 1.7 and before). ([[bugzilla:6518|6518]])
*viewcount - edit [[MediaWiki:Viewcount]]
*numberofwatchingusers - edit [[MediaWiki:Number of watching users pageview]]. This only appears if you also add <code>$wgPageShowWatchingUsers = true;</code> to LocalSettings.php.
*copyright - edit [[MediaWiki:Copyright]]. The parameter $1 on that page is replaced with a link to the details of copyright for your wiki. In LocalSettings.php $wgRightsText for the link text  and set either $wgRightsPage or $wgRightsUrl with the location of a wiki page or external URL.
*privacy - this is a link only. Edit [[MediaWiki:Privacy]] for the link text and [[MediaWiki:Privacypage]] for the wiki page to which to link.
*about - this is a link only. Edit [[MediaWiki:Aboutsite]] for the link text and [[MediaWiki:Aboutpage]] for the wiki page to which to link.
*disclaimer - this is a link only. Edit [[MediaWiki:Disclaimers]] for the link text and [[MediaWiki:Disclaimerpage]] for the wiki page to which to link.
*tagline - not currently used in the footer

See also: [[Footer]], [[Manual:Skinning#Footer]], [[Manual:Configuration settings#Copyright]]

;Line breaks in footer
For line breaks in the footer, search for '''Content is available under''' in the MessagesEn.php and then put line breaks before and after so that it looks like <code><nowiki>'<br />Content is available under $1.<br />',</nowiki></code> It is valid XHTML 1.0 Transitional. NOTE: It would probably be better to just edit the system message (see [[Special pages]]) to add <nowiki><br /></nowiki> before and after the message.

===How can I edit / remove the Powered by MediaWiki image in the footer?===
You can hide the Powered by MediaWiki image by adding the following to your wiki's [[MediaWiki:Common.css]]:
<source lang="css">
#f-poweredbyico { display: none; }
</source>

If you want to remove it completely, you could alter <tt>/skins/MonoBook.php</tt>, which contains the following code that makes the Powered by MediaWiki image appear in the footer:
<source lang="php">
<?php
		if($this->data['poweredbyico']) { ?>
				<div id="f-poweredbyico"><?php $this->html('poweredbyico') ?></div>
</source>
If you would like to remove this image completely, or edit the image, you must locate and edit poweredbyico. It is located in <tt>skins/common/images/</tt> and the image is called <tt>poweredby_mediawiki_88x31.png</tt>.

If you're happy with the logo (or not) and simply want to change the destination link, the code is in '''getPoweredBy() function''' of '''includes\Skin.php.''' Just change the line '''<nowiki>$img = '<a href="http://www.mediawiki.org/"><img src="'.$url.'" alt="Powered by MediaWiki" /></a>';</nowiki>''' to whatever.

===How can I change what the <title> of each page is? Where do I make changes?===
Most of the text that you want to change, can be found in the namespace of MediaWiki.

In order to change titles, texts, announcements and the such, go to Special:Allmessages, where you will see the text associated with the pages you wish to change. You need to log in as an administrator (like the one you made when you installed) to edit the protected entries in the MediaWiki namespace.

If you want to change the title in your browser, you need to edit [[MediaWiki:Pagetitle]]. Go there and edit it just like you would any other page in your wiki.

In recent versions of MediaWiki, [[MediaWiki:Pagetitle]] is <nowiki>$1 - {{SITENAME}}</nowiki> by default. If <nowiki>{{SITENAME}}</nowiki> is producing the wrong text for you, you need to set $wgSitename in your LocalSettings.php. 

If $wgSitename is correct in LocalSettings.php but <nowiki>{{SITENAME}}</nowiki> is still wrong, it may be that you're using a user-contributed language file which incorrectly sets $wgSitename to a transliteration of "Wikipedia". Edit the language file to correct this. For example, the Hebrew language file is at <tt>languages/LanguageHe.php</tt> in your wiki directory. 

Don't forget to clear your browser cache after you fix it.

===How do I make external links open in a new window?===
See [[Manual:Opening external links in a new window|Opening external links in a new window]].

===How can I suppress MediaWiki from formatting urls, tags, etc?===
 <nowiki>svn co <nowiki>http://somwhere.in.the.net/myproject/</nowiki></nowiki>
svn co <nowiki>http://somewhere.in.the.net/myproject/</nowiki>

===How can I force users to preview before they save?===
To curb cursory negligence it may be desirable to disable the save button on the edit page, so users ''must'' preview first.

Here's how to reach that goal by only showing the save button on the preview page:

In <tt>/includes/EditPage.php</tt>, find (line number 1238 in MediaWiki 1.9.0, 1158 in MediaWiki 1.8.2):
<source lang="php">
 "<div class='editButtons'>;
 	{$buttons['save']}
 	{$buttons['preview']}
</source>
and replace these three lines with the following seven
<source lang="php">
 "<div class='editButtons'>");
 	if ( $this->formtype == 'preview') {
 		$wgOut->addHTML(
 "{$buttons['save']}");
 	}
 	$wgOut->addHTML(
 "{$buttons['preview']}
</source>

:''See also: [[Manual:Force preview]] and [[Extension:ForcePreview]].''

===How do I add more buttons on the edit page?===
For adding more toolbar buttons above the edit field, you can use JavaScript code to register them in <tt>mwCustomEditButtons</tt> in your [[MediaWiki:Common.js]]. For example, a button for large text:

<source lang="javascript">
var button = {
        "imageFile": "images/5/56/Button_big.png",  //image to be shown on the button (may be a full URL too), 22x22 pixels
        "speedTip": "big text",    //text shown in a tooltip when hovering the mouse over the button
        "tagOpen": "<big>",        //the text to use to mark the beginning of the block
        "tagClose": "</big>",      //the text to use to mark the end of the block (if any)
        "sampleText": "big text"   //the sample text to place inside the block
};
mwCustomEditButtons.push(button);
</source>

===How can I get more special characters or tags clickable on the edit page?===
For adding more selectable special characters, etc, below the edit field, See [[Extension:CharInsert]]

==Basic usage==
===How do I edit a page?===
To edit a page, simply click the '''edit''' link that appears on each page. Using the default MonoBook skin, this is in the form of a tab at the top of the page. A form will appear, containing the existing markup. When you have finished making modifications, click the '''Save''' button to commit your changes.

''See also:'' {{meta|Help:Editing}}

===How do I create a new page?===
There are several paths to creating a new page:

*Create a link to the page on another page, then click on the red link which appears
*Browse to the intended location of the page, e.g. <nowiki>http://www.example.com/index.php?title=New_page</nowiki> and click on the '''edit''' link.
On some wikis, a failed search for a page will contain a link which allows you to edit that page.

See [[Help:Starting a new page]]

===How do I delete an old version of a page?===
Old versions of page data are retained in the database and can be accessed via the page history features. This is useful for reviewing changes and correcting or reverting undesirable ones, but in some cases, administrators might want to make this information unavailable, for legal reasons, or to reduce the size of the database.

*Administrators can delete an old revision of a page by deleting the page, and then selectively undeleting revisions to be kept
*The [[Extension:Oversight|Oversight]] extension (also known as ''HideRevision'') can be used to move harmful revisions out of page histories
*The <tt>maintenance/deleteOldRevisions.php</tt> [[Manual:Maintenance scripts|maintenance script]] can mass-delete all old revisions of pages and their associated text records.
*See also: [[Manual:Removing embarrassment]].

===Are there any editing tutorials available?===
There are several editing tutorials available, mostly on Wikimedia sister projects, such as Wikipedia. There are also markup references, etc. available on ''Meta''.

*[[m:Help:Editing|Editing]] help content on ''Meta''
*The ''[[:en:Wikipedia:How to edit a page|How to edit a page]]'' guide on the English Wikipedia

===How do I view the printable form of a page?===
MediaWiki includes stylesheets which automatically style a page appropriately when it is printed; using the print or print preview function within your browser ought to render the page in a printable form.

You can also view this printable form using the ''printable version'' link in the toolbox.

==Wiki Importing==
===Importing from MediaWiki XML dumps===
See [[Manual:Importing XML dumps]]

===Importing from other types of wiki===
'''Note:''' The following is directly copied from [http://meta.wikimedia.org/w/index.php?title=MediaWiki_FAQ old meta FAQ]. It might need to be corrected. 

There is some documentation about importing in the UPGRADE file distributed with MediaWiki.

To follow on from those, this is how at least one individual imported pages from usemod to MediaWiki:

Because MediaWiki does not automatically link to [[CamelCase]] style links, you will need to add brackets <nowiki> [[ ]] </nowiki> to all your links. You can do this with the following:

First, obtain ImportStage1.txt (or whatever you want to call it) from the importUseModWiki.php script ( use > to pipe the output to a file )

Second, do 

<pre>
sed '/Importing/!s/\ [A-Z]\w*[a-z]\w*[A-Z]\w*[a-zA-Z]/\ \[\[&\]\] /g'
    ImportStage1.txt > ImportStage2.txt
</pre>

This should create proper links in place of your CamelCase links.

'''This doesn't''' work so well for SubPage links - someone care to fix?

Then,

<pre>
sed 's/upload\:\w*\.\w*/http\:\/\/aberwiki\.org\/uploads\/& /g'
    ImportStage2.txt > ImportStage3.txt
</pre>

This fixes your upload links. Change the replace text so it fills in your url such as <nowiki>http://www.yourwiki.org/uploads/filename</nowiki>

You are now ready to import ImportStage3.txt into your database with a command such as 

<pre>
mysql -u<mysqluser> -p<yourpass> <db name> < ImportStage3.txt
</pre>

'''Note:''' If your <code>importUseModWiki.php</code> outputs an XML file instead of SQL statements, this probably means you have a rather new version of MediaWiki. In such a case, you case import the XML file -- see [[Importing a Wikipedia database dump into MediaWiki]], towards the bottom of the page ('Import XML'). Don't forget to rebuild all the tables -- that page also explains how to do that.

===Importing from other types of files===
Here are some info on importing from other types of files:

*[http://xpt.sourceforge.net/techdocs/language/wiki/wikimedia/wkm07-MediaWikiImport/index.html#How_to_migrate_lot_of_text_files Massive text files importing]
*[http://xpt.sourceforge.net/techdocs/language/wiki/wikimedia/wkm07-MediaWikiImport/index.html#mass_image_upload_zip_ Massive image files uploading]
*[http://xpt.sourceforge.net/techdocs/language/wiki/wikimedia/wkm07-MediaWikiImport/ar01s02.html Tools to converter from html to MediaWiki], [http://xpt.sourceforge.net/techdocs/language/wiki/wikimedia/wkm07-MediaWikiImport/ar01s03.html and this].
*[http://xpt.sourceforge.net/techdocs/language/wiki/wikimedia/wkm07-MediaWikiImport/ar01s04.html Tools to converter from Microsoft .chm help files to MediaWiki]

===MediaWiki auto importing script===
Taken from [http://xpt.sourceforge.net/tools/wiki_import/ wiki_import - MediaWiki auto import script]:

====Description====
The script is designed to import a whole folder of files into MediaWiki, with the folder directory tree mapped as wiki category hierarchy.

====Features====
*economic, build wiki site from existing knowledge base collection without "double-entry"
*persistent, map folder directory tree as wiki category hierarchy
*sophisticated, import/handle all well-known file types automatically
*complete, cover every applicable scenario, even the case when you need to control access to individual wiki pages
*versatile, highly customizable

====Quick Help====
<tt>
wiki_import.sh $ $Revision: 1.1 $

mediawiki automatic file import script

Usage: wiki_import.sh [OPTIONS]...

The script is designed to import a whole folder of files into mediawiki, with 
the folder directory tree mapped as wiki category hierarchy.

The specification of the file-to-import is passed from standard input.

Options:
  -s, --sect=n     the root category section of the wiki
                     of the imported article (mandatory)
  -1, --header     include standard header (category hierarchy path & notice)
  -l, --link       link to actual file on the web site
  -f, --footer     include standard footer (article category)
  -R, --res[=p]    add restricted tag in the footer
                     as '{{<Res Param|Root Category> Restricted}}'  
                     (default=`$_opt_sect')

Configuration Options:
  -p, --php=fn     mediawiki import php script specification
  -r, --root=n     the root category name for the whole wiki site
  -m, --max=n      max_allowed_packet for mysqld to import
  -u, --user=n     wiki user used for the import
  -a, --arch=p     the root url that linked-to archive files based on

Examples:

  echo ./path/to/file.ext | wiki_import.sh -1 -l -f -s 'Customer Support' -R 
</tt>

For the rest of details, check out [http://xpt.sourceforge.net/tools/wiki_import/  wiki_import].

==Customising further==
===How can I allow use of HTML tags?===
See [[Manual:$wgRawHtml]] as well as [[Manual:$wgGroupPermissions]] and [[Manual:Preventing access]].

{{caution}} This can be easily abused to attack users

See [[Extension:SecureHTML]] and [[Extension:HTMLets]] for ways to make this safe(er).

===How can I allow uploading of HTML files?===
See [[Manual:Allowing HTML Uploads]].

{{caution}} This can be easily abused to attack users

==Why...?==
===...is the Help namespace empty?===
We don't currently have a clean, internationalised set of help pages under a free license. A few developers are hoping to make this possible; however, the Help namespace currently ships in a blank state. You are free to add your own help pages, copy the [[Help:Contents|Public Domain help pages]] or copy certain of the items from ''Meta'', e.g. the user guide or [[m:Help:Contents|MediaWiki Handbook]], these two collections being free to use under the [[:en:GNU Free Documentation License|GNU Free Documentation License]].

===...are some of my images not showing up after an upgrade?===
Several users have reported that, following an upgrade or a moving of their wiki, several images fail to be shown inline. The files exist, and the image description pages show a MIME type of <tt>unknown / unknown</tt> and, in some cases, a warning about potentially dangerous files.

To fix this, run the <tt>maintenance/rebuildImages.php</tt> script from the command line. This will set MIME information for each file in the database.

===...are all PNG files not being turned into thumbnails?===
After upgrading to a more recent version of PHP, it is possible a different MimeMagic.php function is being used to detect file MIME types, particularly the built-in PHP function mime_content_type, which fails to detect PNG files. Search the web for <i>mime_content_type png</i> for information on fixing this bug at the PHP level, possibly by editing your magic.mime file.

'''See [[Manual:FAQ#"File is corrupt or has an invalid extension"|here]] for more info.'''

=== ...is a search for a short keyword giving no hits? ===
By default, MediaWiki uses MyISAM's fulltext matching functionality to allow searching page content. The default settings for this mean that words of less than four characters won't be indexed, so results won't be returned for those queries.

To alter this behaviour, MySQL needs to be reconfigured to index shorter terms, and MediaWiki's search index table needs to be repaired, to rebuild the indices.

*For help on reconfiguring MySQL, see http://dev.mysql.com/doc/refman/4.1/en/fulltext-fine-tuning.html
*To repair the search index table, run the query <code>REPAIR TABLE searchindex QUICK;</code> against your database

===...can't I download MediaWiki 1.13?===
MediaWiki 1.13 is in a development state at present, and has not been packaged into a general release. The code can be [[download from SVN|downloaded from Subversion]] if desired.

===...doesn't this work? It works on Wikipedia!===
Wikipedia and other Wikimedia web sites use the current version of the code in development; at present, this is MediaWiki 1.14alpha. Coupled with the use of several extensions, this means that functionality between these wikis and your particular setup may differ.

*To obtain the current development code, read [[Important Release Notes#MediaWiki 1.13]]
*To check what version a Wikimedia wiki is running, as well as what extensions are installed, visit the [[Special:Version]] page for that wiki

===...do I get a '''403 Forbidden''' error after setting permissions on my Fedora system?===
Fedora Core enables [[SELinux]] by default. Instructions for setting SELinux permissions for MediaWiki [[SELinux|are available]].

===...do I get logged out constantly? ===
This is probably related to cookies or session data, for example a problem with PHP's session.save_path [http://php.net/manual/en/ref.session.php#ini.session.save-path] setting. See [[m:Help:Logging in#Log in problems|Log in problems]].

===...is it a good idea to keep user accounts?===
At many times you just want to remove a user account out of the wiki either because it belonged to a spammer account or you just feel like it. The appropriate choice is to block the account or rename it if needed. Here is why:

''Do I just remove his row from the [[User table]]?''

[http://lists.wikimedia.org/pipermail/wikitech-l/2007-June/031579.html Rob Church posted the following] regarding this issue on the mediawiki-l mailing list:

"If the user has made edits, then removing rows from the user table
cause theoretical loss of referential integrity. Now, to be honest
with you, I can't think of any conditions where this would cause an
actual problem; "undefined behaviour" is the phrase we use.

What I'd suggest doing, to be on the safe side, is running a couple of
quick updates against the database:

:<code>UPDATE revision SET rev_user = 0 WHERE rev_user = <current_user_id></code>
:<code>UPDATE archive SET ar_user = 0 WHERE ar_user = <current_user_id></code>

What this will do is cause MediaWiki to treat the revisions as having
been made anonymously when generating things like page histories,
which should eliminate any problems caused by these routines
attempting to check user details from other tables.

If the user has caused log entries, i.e. rows in the logging table, or
uploaded images, then the situation becomes trickier, as you'll have
to start mopping up all the rows everywhere and it could become a bit
of a mess, so if the user's done anything other than edit, I would
strongly recommend just blocking them indefinitely.

If the username is offensive or undesirable, then you could consider
renaming it using the [[Extension:Renameuser|RenameUser]] extension."

==Anti-spam==
See '''[[Manual:Combating spam]]''' for an overview of anti-spam measures. 

===Where do I get the spam blacklist from and how do I install it?===
The [[m:Spam blacklist|spam blacklist]] extension can be found in [[Download from SVN|Subversion]], just like all other officially supported extensions. For installation and configuration instructions, consult the [http://svn.wikimedia.org/viewvc/mediawiki/trunk/extensions/SpamBlacklist/README?view=markup README] file and [[Extension:SpamBlacklist|extension page]] over here.

===How do I use $wgSpamRegex to block more than one string?===
'''$wgSpamRegex''' is a powerful filter for page content. Adding multiple items to the regex, however, can be awkward. Consider this snippet:
<source lang="php">
$wgSpamRegexLines[] = 'display\s*:\s*none';
$wgSpamRegexLines[] = 'overflow:\s*\s*auto';
[...]
$wgSpamRegex = '/(' . implode( '|', $wgSpamRegexLines ) . ')/i';
</source>

This example code allows convenient addition of additional items to the regex without fiddling about each time. It also demonstrates two popular filters, which block some of the most common spam attacks.

:''See also:'' [[Extension:SpamRegex]]

==Where now?==
===I've found a bug or have a feature request. Where do I post it?===
Bugs and feature requests should be posted on [[MediaZilla:|MediaZilla]], our implementation of [[:en:Bugzilla|Bugzilla]]. Please search the database prior to posting, to avoid creating duplicate entries.

===I'm getting a strange error. What now?===
*See if it is covered by ''[[Manual:Errors and Symptoms]]''
*Try to find out more about the problem, see ''[[How to debug MediaWiki]]''
*See the [[#Still no luck. Where can I ask for help?|section below]] for information on how to contact [[developers]] and other knowledgabe users.

===I have a question not answered here. Where do I go next?===
If you've exhausted the FAQ above, please try the following:

*Check the [[Project:Help|other sources of help]] on this site
*[[Special:Search|Search]] the rest of this site
*Search older documentation archived on [[m:Main Page|Meta]]; Useful developer documentation remains on Meta.wikimedia.org in the category [[m:Category:Pages to be exported to MediaWiki.org|Pages to be exported to MediaWiki.org]] until the [[m:Meta:MetaProject to transfer content to MediaWiki.org]] completes
*Search the web
*[[How to become a MediaWiki hacker|Dig into the source]]
*See the [[#Still no luck. Where can I ask for help?|section below]] for information on how to contact developers and other knowledgabe users.

===Still no luck. Where can I ask for help?===
*Post a message at [[Project:Support desk]]
*Email the [http://mail.wikipedia.org/mailman/listinfo/mediawiki-l mediawiki-l mailing list] (perhaps search [http://lists.wikimedia.org/pipermail/mediawiki-l/ the archive] first).
*Ask the [[developers]] in our IRC channel ([[:en:Freenode|Freenode]] network, channel '''[irc://irc.freenode.net/mediawiki #mediawiki]''').

===Recommended reading===
*[http://www.catb.org/~esr/faqs/smart-questions.html Asking smart questions]
*[http://www.chiark.greenend.org.uk/~sgtatham/bugs.html Effective bug reporting]
*[http://workaround.org/moin/GettingHelpOnIrc Getting help on IRC]
*Mizanur Rahman, ''MediaWiki Administrators' Tutorial Guide'', ISBN 1904811590

{{Languages}}

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