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layout: default
navsection: userguide
-navmenu: Reference
title: "Command line interface"
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-h1. Reference: Command Line Interface
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*First, you should be "logged into an Arvados VM instance":{{site.baseurl}}/user/getting_started/ssh-access.html#login, and have a "working environment.":{{site.baseurl}}/user/getting_started/check-environment.html*
h3. Usage