brew install youtube-dl brew install ffmpeg
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#Debian and Ubuntu based Linux distributions
Also including: Linux Mint, Linux Mint Debian Edition (LMDE), elementaryOS and others.
Node.js is available from the NodeSource Debian and Ubuntu binary distributions repository (formerly Chris Lea's Launchpad PPA). Support for this repository, along with its scripts, can be found on GitHub at nodesource/distributions.
NOTE: If you are using Ubuntu Precise or Debian Wheezy, you might want to read about running Node.js >= 4.x on older distros.
curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash - sudo apt-get install -y nodejs
npmpackages globally without sudo on OS X and Linux
npm installs packages locally within your projects by default. You can also install packages globally (e.g.
npm install -g <package>) (useful for command-line apps). However the downside of this is that you need to be root (or use
sudo) to be able to install globally.
Here is a way to install packages globally for a given user.