npm command

# To download and install a module globally:
npm install -g <module_name>

# To download all dependencies referenced in package.json:
npm install

# To download a given dependency required for the application to run, and add it to the package.json:
npm install <module_name>@<version> --save

# To download a given dependency for development purposes, and add it to the package.json:
npm install <module_name>@<version> --save-dev

# To uninstall a module:
npm uninstall <module_name>

# To list a tree of installed modules referenced in package.json:
npm list

# To list top-level globally installed modules:
npm list -g --depth=0

# To interactively create a package.json file:
npm init

# ---

# To check a package for outdated dependencies:
npm outdated

# To update all outdated local packages:
npm update

# To update a package to the latest version:
npm install <package_name>@latest --save

# To update a dev package to the latest version:
npm install <package_name>@latest --save-dev

# To update all global packages by doing:
npm update -g

# To check for packages not declared in package.json:
npm prune

# To lock down your dependencies versions:
npm shrinkwrap

# To search for packages:
npm search <package_name>

# To see where modules go:
npm root

# To see where executables go:
npm bin

# To list installed packages:
npm ls