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mac os install:

• When using Mac OS X you can install Node using an Install Wizard. Go to https://nodejs.org/en/download/
• to download the node-v*.pkg file by clicking on “Macintosh Installer” icon.

After downloading the file,

• Execute the file.
• Follow the instructions for successful software installation by providing a proper system user password in the setup wizard.
• After finishing installation you’ll get the confirmation message informing that node is installed successfully in your machine.

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• Go to https://nodejs.org/en/download/ and download the installer according to the OS. Extract the files and place it under the path as /usr/local/nodejs with the following commands:

$ cd /tmp
$ wget http://nodejs.org/dist/v0.12.0/node-v0.12.0-linux-x64.tar.gz
$ tar xvfz node-v0.12.0-linux-x64.tar.gz
$ mkdir -p /usr/local/nodejs
$ mv node-v0.12.0-linux-x64/* /usr/local/nodejs

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• We need to add the environmental variables for the nodejs, for enabling the operating system to understand the accessibility of node in your machine. For that add /usr/local/nodejs/bin to the PATH environment variable as

export PATH=$PATH:/usr/local/nodejs/bin. 

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• This is applicable for Linux, MAC, FreeBSD operating systems.

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