root ~ # dpkg -l | grep nodejs
ii  nodejs                                                      6.2.1-1nodesource1~jessie1           amd64        Node.js event-based server-side javascript engine
cat: /etc/ubuntu_version: No such file or directory
root ~ # cat /etc/debian_version 
8.5
root ~ # cat /etc/ubuntu_version
root ~ # apt-cache show nodejs  | egrep '^Package|^Version|^Maint'
Package: nodejs
Version: 6.2.1-1nodesource1~jessie1
Maintainer: Chris Lea <chl@nodesource.com>
Package: nodejs
Version: 6.0.0~dfsg-1
Maintainer: Debian Javascript Maintainers <pkg-javascript-devel@lists.alioth.debian.org>
Package: nodejs
Version: 0.10.29~dfsg-2
Maintainer: Debian Javascript Maintainers <pkg-javascript-devel@lists.alioth.debian.org>