npm Settings

Add below lines to your .bashrc or .bash_profile.

username="testuser"
password="password%40123"
proxy="proxyhostORip:8080"

npm config set registry "http://registry.npmjs.org/"
npm config set proxy "http://$username:$password@$proxy"
npm config set http-proxy "http://$username:$password@$proxy"
npm config set https-proxy "http://$username:$password@$proxy"
npm config set strict-ssl false

npm config ls -l

If your password contains special characters like @ or $, replace them with corresponding ASCII character.

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References:

• https://stackoverflow.com/questions/7559648/is-there-a-way-to-make-npm-install-the-command-to-work-behind-proxy