byStarTW says to YSITDuser@ubuntu:~$ curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash - [sudo] password for user: sudo: unable to open /var/lib/sudo/user/0: No such file or directory ## Installing the NodeSource Node.js v7.x repo... ## Populating apt-get cache... + apt-get update Ign http://us.archive.ubuntu.com trusty InRelease Ign http://us.archive.ubuntu.com trusty-updates InRelease Ign http://us.archive.ubuntu.com trusty-backports InRelease Ign http://security.ubuntu.com trusty-security InRelease Ign http://us.archive.ubuntu.com trusty Release.gpg Ign http://us.archive.ubuntu.com trusty-updates Release.gpg Ign http://us.archive.ubuntu.com trusty-backports Release.gpg Ign http://security.ubuntu.com trusty-security Release.gpg Hit http://us.archive.ubuntu.com trusty Release W: Not using locking for read only lock file /var/lib/apt/lists/lock E: Couldn't create temporary file to work with /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_trusty_Release - mkstemp (30: Read-only file system) W: Not using locking for read only lock file /var/lib/dpkg/lock Error executing command, exitingat Sat, Aug 12, 2017 4:33 PM