Mediawiki

LocalSettings.php

php -v
mysql -V  # capital V

$ mysql -u root -p -e 'SHOW DATABASES'

$ mysql -u root -p -e 'SHOW TABLES' DB_NAME

apt-get install mediawiki-math

wfLoadExtension( 'Math' );

sudo apt-get install ocaml
cd extensions/Math/math
make

php maintenance/update.php  

cd Downloads
wget https://extdist.wmflabs.org/dist/extensions/MobileFrontend-REL1_30-5ecc673.tar.gz
wget https://extdist.wmflabs.org/dist/skins/MinervaNeue-REL1_30-7ee8663.tar.gz
tar xzvf MobileFrontend-REL1_30-5ecc673.tar.gz -C ../mediawiki-1.30.0/extensions/
tar xzvf MinervaNeue-REL1_30-7ee8663.tar.gz -C ../mediawiki-1.30.0/skins

wfLoadSkin( 'MinervaNeue' ); # put it in the same section of wfLoadSkin

wfLoadExtension( 'MobileFrontend' );
$wgMFAutodetectMobileView = true;
$wgMFDefaultSkinClass = 'SkinMinerva';

$wgShowExceptionDetails = true; # debugging use only

$ sudo apt install mediawiki
The following additional packages will be installed:
  apache2 apache2-bin apache2-data apache2-utils libapache2-mod-php8.2 libapr1 libaprutil1 libaprutil1-dbd-sqlite3 libaprutil1-ldap liblua5.3-0
  libsodium23 libxslt1.1 mediawiki-classes php php-common php-intl php-mbstring php-mysql php-xml php8.2 php8.2-cli php8.2-common php8.2-intl
  php8.2-mbstring php8.2-mysql php8.2-opcache php8.2-readline php8.2-xml

$ sudo apt remove mediawiki
The following packages were automatically installed and are no longer required:
  apache2 apache2-bin apache2-data apache2-utils libapache2-mod-php8.2 libapr1 libaprutil1 libaprutil1-dbd-sqlite3 libaprutil1-ldap liblua5.3-0
  libsodium23 libxslt1.1 mediawiki-classes php php-common php-intl php-mbstring php-mysql php-xml php8.2 php8.2-cli php8.2-common php8.2-intl
  php8.2-mbstring php8.2-mysql php8.2-opcache php8.2-readline php8.2-xml
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
  mediawiki

vagrant roles enable mobilefrontend --provision

vagrant enable-role multimediaviewer 
vagrant provision

mysql> DROP DATABASE wikidb;
# set the password for username 'example' to 'newpassword'
sudo php changePassword.php --user=example --password=newpassword
<span style="color: red">
Text is red.
</span>

<sup>1</sup>

some stuff
some more stuff
some stuff
some more stuff
abc
sudo /etc/init.d/apache2 restart

session.cache_expire=180

session.gc_maxlifetime = 1440

session.cookie_lifetime = 1440

$wgFavicon = "$wgScriptPath/favicon.ico";

chmod 644 favicon.ico
cd maintenance
sudo php changePassword.php --user=UserName --password=NewPassword

$wgMainCacheType = CACHE_ACCEL;

$wgMaxArticleSize = 100;  # 100 KB

# Enabling mod_rewrite
sudo a2enmod rewrite
sudo systemctl restart apache2

# Setting Up Apache2 configuration file
sudo nano /etc/apache2/sites-available/mediawiki.conf  # new file
sudo a2ensite mediawiki.conf
sudo a2dissite 000-default.conf
sudo apache2ctl configtest
sudo systemctl restart apache2

# Setting up the rewrite rules
sudo nano /var/www/html/.htaccess  # new file

# LocalSettings.php
sudo mv /var/www/html/mediawiki /var/www/html/w
sudo nano /var/www/html/w/LocalSettings.php
# $wgScriptPath = "/w";
# $wgArticlePath = "/wiki/$1";
# $wgUsePathInfo = true;

<VirtualHost *:80>
    <Directory /var/www/html>
        Options Indexes FollowSymLinks MultiViews
        AllowOverride All
        Require all granted
    </Directory>

    ServerAdmin webmaster@localhost
    DocumentRoot /var/www/html

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

# Enable the rewrite engine
RewriteEngine On

# Short URL for wiki pages
# http://domain/w/index.php/Main_Page becomes http://domain/wiki/Main_Page
RewriteRule ^/?wiki(/.*)?$ %{DOCUMENT_ROOT}/w/index.php [L]

# Redirect / to Main Page
# http://domain will go to http://domain/wiki/Main_Page
RewriteRule ^/*$ %{DOCUMENT_ROOT}/w/index.php [L]

$ composer install --no-dev
$ composer install <package>:<version> # install mediaWiki extension
$ composer install mediawiki/vector-skin:dev-REL1_35

sudo apt install composer
nano composer.local.json
composer update

wfLoadExtension( 'ImageMap' );

wfLoadExtension( 'GraphViz' );
$wgGraphVizExecPath = "/usr/bin";
$wgGraphVizMscgenPath = "/usr/bin";

wfLoadExtension( 'WikiEditor' );
$wgDefaultUserOptions['usebetatoolbar'] = 1;

wfLoadExtension( 'Math' );
$wgMathFullRestbaseURL= 'https://en.wikipedia.org/api/rest_';
$wgMathValidModes[] = 'mathml';

$ curl -XPOST -d'q=e=mc^2' http://raptor575.startdedicated.com:10044/

wfLoadExtension( 'Math' );
$wgMathValidModes[] = 'mathml';
$wgDefaultUserOptions['math'] = 'mathml';
$wgMathMathMLUrl = 'http://12.23.34.45:10042/'; # IP of Mathoid server

$ sudo apt-get install nodejs nodejs-legacy nodejs-dev npm librsvg2-dev pkg-config
...
The following packages have unmet dependencies:
 nodejs : Conflicts: nodejs-legacy but 4.8.2~dfsg-1 is to be installed
E: Unable to correct problems, you have held broken packages.

$ sudo apt-get install nodejs nodejs-legacy nodejs-dev npm mocha librsvg2-dev pkg-config
...
The following information may help to resolve the situation:
The following packages have unmet dependencies:
 nodejs : Conflicts: nodejs-legacy but 4.8.2~dfsg-1 is to be installed
E: Unable to correct problems, you have held broken packages.

docker run -d --name mathoid -p 10044:10044 --restart unless-stopped nlpub/mathoid
# nc -vz localhost 10044
# Connection to localhost 10044 port [tcp/*] succeeded!
curl -XPOST -d'q=e=mc^2'  http://localhost:10044/

sudo apt install librsvg2-dev
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash
source .bashrc

# list node versions
nvm ls-remote
# install a specific version of node
nvm install 10.16.3
nvm uninstall 12.11.0 # from my previous mistake of installing the latest
nvm list  # list the available Node.js versions locally
# nvm use 10.16.3
nvm use node
node --version  # v10.16.3

nvm install-latest-npm # OR nvm install --latest-npm
git clone https://github.com/wikimedia/mathoid
cd mathoid
npm install
npm audit fix --force
npm install acorn
npm install ajv
# The version number below may change
sudo cp ~/.nvm/versions/node/v10.16.3/bin/node /usr/local/bin/
npm test # fail but it is OK
nano mediawiki-1.33.0/LocalSettings.php

$wgAllowExternalImages = true;
$wgAllowImageTag = true;

<img src="https://s3.amazonaws.com/cdn-origin-etr.akc.org/wp-content/uploads/2017/04/12185602/Lagotto-Romangolo-Tongue-Out.jpg" width="100">

<img src="http://latex.codecogs.com/svg.latex?1+sin(x)" border="0"/>

root@ubuntu1804:/var/www/html/mediawiki/extensions# ls -lh SimpleMathJax/
total 20K
-rw-r--r-- 1 root root  829 May 12 11:47 extension.json
drwxr-xr-x 3 root root 4.0K May 12 11:47 modules
-rw-r--r-- 1 root root 1.7K May 12 11:47 README.md
-rw-r--r-- 1 root root 1.3K May 12 11:47 SimpleMathJax_body.php
-rw-r--r-- 1 root root  391 May 12 11:47 SimpleMathJax.php

<span class="texhtml mvar" style="font-style:italic;">{{{1}}}</span>
library(colorspace)
svglite::svglite("colorspace.svg", width=8, height=6)
hcl_palettes(palette = "Dark 2", n=5, plot = T)
dev.off()

$ php maintenance/dumpUploads.php | grep Boxplot
images/2/25/Boxplot.svg
$ find images -iname *Boxplot*
images/thumb/2/25/Boxplot.svg
images/thumb/2/25/Boxplot.svg/120px-Boxplot.svg.png
images/thumb/2/25/Boxplot.svg/180px-Boxplot.svg.png
images/thumb/2/25/Boxplot.svg/450px-Boxplot.svg.png
images/thumb/2/25/Boxplot.svg/600px-Boxplot.svg.png
images/thumb/2/25/Boxplot.svg/1200px-Boxplot.svg.png
images/thumb/2/25/Boxplot.svg/400px-Boxplot.svg.png
images/thumb/2/25/Boxplot.svg/240px-Boxplot.svg.png
images/thumb/2/25/Boxplot.svg/900px-Boxplot.svg.png
images/thumb/2/25/Boxplot.svg/300px-Boxplot.svg.png
images/thumb/2/25/Boxplot.svg/200px-Boxplot.svg.png
# Get a list of uploaded images, save them to a new folder
php maintenance/dumpUploads.php | grep images | xargs tar czvf ~/Downloads/backup_files.tar.gz
mkdir ~/Downloads/imagesdir
tar xzvf backup_files.tar.gz -C ~/Downloads/imagesdir
cd ~/Downloads/imagesdir
find images -type f -exec cp {} . \;
rm *.txt
rm *.pdf
rm -rf images

# scp imagesdir to my local computer. Then run
php maintenance/importImages.php --overwrite /mnt
# where imagesdir has been mounted to /mnt
# For some reason, some images are not imported?
chown -R www-data:www-data images

wget -k -p -r -R '*Special*' -R '*Help*' -E http://example.com/wiki
x <- readLines("~/Downloads/linux.txt")
# Manual check possible header levels

# The original source (eg Ubuntu) may be messed up
# Most are starting with '===' but two are starting from '=='
# In that case, we need to fix the source first
# This solves the mystery that TOC does not show up in mobile device
cnt <- 0
ind <- grep("^== ", x)
if (length(ind) > 1) {
  cat("Number of ==", length(ind), "\n")
  cnt <- cnt + 1L
  x[ind] <- gsub("==", paste0(rep("=", cnt), collapse = ""), x[ind])
}

# The rule may fail if '===' occurs in a preformated text/code
# In this case we can safely ignore the cases.
ind <- grep("^=== ", x)
if (length(ind) > 1) {
  cat("Number of ===", length(ind), "\n")
  cnt <- cnt + 1L
  x[ind] <- gsub("===", paste0(rep("=", cnt), collapse = ""), x[ind])
}

ind <- grep("^==== ", x)
if (length(ind) > 1) {
  cat("Number of ====", length(ind), "\n")
  cnt <- cnt + 1L
  x[ind] <- gsub("====", paste0(rep("=", cnt), collapse = ""), x[ind])
}

ind <- grep("^===== ", x)
if (length(ind) > 1) {
  cat("Number of =====", length(ind), "\n")
  cnt <- cnt + 1L
  x[ind] <- gsub("=====", paste0(rep("=", cnt), collapse = ""), x[ind])
}
writeLines(x, "~/Downloads/linux2.txt")

	Introduction		Installation		Packages and Repositories		File Managers
	Desktop Add-ons		Virtual Machines		Games and Entertainment		Internet

Mediawiki

Announcements of releases and security updates

Version lifecycle

Cheatsheet, book

Wikipedia

Keyboard shortcut

Install mediawiki on ubuntu

Check requirement

http://localhost/mediawiki setup

Enable tex for formula

Skins

MobileFrontEnd

Change default port

Composer and PHP

Install on Ubuntu 16.04, 18.04, 20.04, 22.04

Install mediawiki on debian

Install mediawiki through Vagrant + VirtualBox

Run mediawiki with Docker

Install mediawiki on XAMPP

LocalSettings.php

Customize

Prevent access

Special pages

Uninstall mediawiki

Mediawiki database

MySQL

Users

Format

Comment symbol in LocalSettings.php

Preformatted text with text wrap

Color format: CSS

Preformatted text: nowiki

"span" tag for fixed width text with colored background

Display special characters like backslash using unicode

Formatting: Superscript and subscript

Syntax highlight

Create tables

Indent a table or math equation in a list

Color of a cell in a table

Images

Indent in a numbered list

Indent pre or a block of code

How can I link to a specific answer?

Mediawiki/Apache has no response

Auto timeout

php.ini

'keep me logged in' option

Errors and symptoms

Class "FormatJson" not found

favicon

Emoji

Change skin

Change user's password

tackle slowness when saving pages

Apache vs Nginx

Nginx and PHP

Browser's tools

Alternatives to mediawiki

Install moinmoin

Article size and its limit

Shorten URL (remove index.php)

Change/move main page title

Registration time, password

Extensions

Composer

Google Analytics

Graphviz

ImageMap

Math

MobileFrontEnd

WikiEditor

YouTube

Math extension

Examples of writing Math in mediawiki

MathML

Mathoid server

Mathoid server on Ubuntu

Mathoid on Docker

CLI interface

Embed images (math equations) from URL