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Install compiler tools

If you want features such as application profiling or monitoring, you may need to install compiler tools before you start.  See Installing compiler tools for more information.

Set directory permissions

To install Node and StrongLoop , you need permissions to write to directories:

  • /usr/local/bin 
  • /usr/local/lib/node_modules 

If you see errors such as:

npm ERR! Error: EACCES, mkdir '/usr/local/lib/node_modules/strongloop'
npm ERR! Please try running this command again as root/Administrator

Then you don’t have the required rights to create files or directories.  Either change the rights for the specified directories, or run the command using sudo.  In general, it’s better to fix the directory rights as follows:

$ sudo chown -R $USER /usr/local

This command makes your user account the owner of the /usr/local directory. Then you won’t ever have to use sudo to install Node or install packages globally with npm. For more information, see How to Node.

If you have to use sudo, use the following command:

$ sudo npm install -g --unsafe-perm install strongloop

Install Node.js

If you haven’t already installed Node, download the native installer from and run it.

Install StrongLoop

Follow these steps:

  1. Open a Terminal window.
  2. Enter this command:

    $ npm install -g strongloop

    If you didn’t set your file and directory privileges as instructed above, use this command (not recommended):

    $ sudo npm install -g strongloop


If you run into any problems, see Installation troubleshooting.