Node forever /usr/bin/env: node: No such file or directory

While the accepted answer fixes the problem, the correct way to do that, at least with Debian Jessie and forward and Ubuntu 14.4 and forward1 is to install nodejs-legacy:

apt-get install nodejs-legacy

The reason is that Debian already had a package (node) providing /usr/bin/node, and the nodejs node binary had to be installed into /usr/bin/nodejs.

The nodejs-legacy package provides a symbolic link from /usr/bin/nodejs to /usr/bin/node (and conflicts with the node package).

Source: [CTTE #614907] Resolution of node/nodejs conflict and Debian bug #614907: node: name conflicts with node.js interpreter

EDIT: As of December 2018, this is no longer the correct way. See the other two answers.

You need to symlink the nodejs executable to node sudo ln -s "$(which nodejs)" /usr/local/bin/node The reason for this is that when you do "apt-get install node", it installs an unrelated package, so they had to choose a different name so it wouldn't conflict