List all global npm packages and any dependencies
npm list -g
Filter npm list results
npm list -g | grep grunt
Don’t show dependancies in list
npm list -g --depth=0
Show the latest version of a package on npm
npm view grunt-cli version
List outdated local packages
npm -g outdated
Show current version of a local npm package
npm show grunt-cli version
Update an npm package to the latest available version
npm update -g grunt-cli