# RegExr

RegExr is an online tool to learn, build, and test Regular Expressions.

• Results update in real-time as you type.
• Supports JavaScript & PHP/PCRE RegEx.
• Roll over a match or expression for details.
• Save & share expressions with others.
• Use Tools to explore your results.
• Browse the Reference for help & examples.
• Undo & Redo with cmd-Z / Y in editors.
• Search for & rate Community patterns.

• RegExr uses Gulp to manage the build process.
• You will need to install Node and Gulp, and install other dependencies via npm install.
• Running gulp (default) will run dev builds and set up a test server.

First of all, you need to install node.js on your CentOS system. Use following set of commands to add node.js yum repository on your CentOS system and install it.

sudo yum install -y gcc-c++ make
curl -sL https://rpm.nodesource.com/setup_12.x | sudo -E bash -

Then install the Nodejs package on your system.

sudo yum install nodejs

After installation of Node.js and Npm on your system, use the following commands to install Gulp CLI globally on your system.

npm install -g gulp-cli

You have successfully installed the Gulp CLI tool on your system. Switch to your existing node.js application directory or create a new application with the below commands:

mkdir my-project && cd my-project
node init

Then add the Gulp module to your project

npm install --save-dev gulp

All done, Let’s check the installed version of Gulp CLI on your system and Gulp module in your application with the following command.

gulp --version

CLI version: 2.2.0
Local version: 4.0.2

• You might need to update g++

This can take a long time so don't just run this if it is not nessesary

sudo yum install libmpc-devel mpfr-devel gmp-devel

cd ~/Downloads
curl ftp://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/releases/gcc-4.9.2/gcc-4.9.2.tar.bz2 -O
tar xvfj gcc-4.9.2.tar.bz2

cd gcc-4.9.2
./configure --disable-multilib --enable-languages=c,c++
make -j 4
make install

Open package.json

# Update
"sass": "^1.26.5",
# To
"sass": "^1.49.9",

npm remove -g node-gyp
npm install -g node-gyp

mkdir -p /var/www/tools/regex.webally.co.za
cd /var/www/tools/regex.webally.co.za
git clone https://github.com/gskinner/regexr.git .
npm install
gulp