This tutorial screencast will show you how to set up a non-root superuser account (sudo) and SSH key authentication on an Ubuntu 14.04 server. Following these steps can improve the security of your server, and is recommended for all Linux servers.
A written tutorial on the same topic can be found here
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Software Engineer @ DigitalOcean. Former Señor Technical Writer (I no longer update articles or respond to comments). Expertise in areas including Ubuntu, PostgreSQL, MySQL, and more.
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