Cannot brew install node – Warning: The post-install step did not complete successfully

There are two steps involved.

1. Simply run these four commands:

    sudo chown -R `whoami`:admin /usr/local/include/node
    sudo chown -R `whoami`:admin /usr/local/bin
    sudo chown -R `whoami`:admin /usr/local/share
    sudo chown -R `whoami`:admin /usr/local/lib/dtrace 

2. Finally, run the overwrite command:

    brew link --overwrite node