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Above and beyond the question of whether it's a good idea (it opens up the potential for a non-root user to fill up the root filesystem, causing havoc), you could accomplish this in several different ways: chmod a+w / -- to give "other" write permission chgrp somegroup /; chmod g+w /; usermod -G somegroup user -- to change the group ownership of / to a ...


2

The problem is not occurring because of the UID of the user. 500 is just fine as a UID, and that UID doesn't make it a 'non-login' user except in the eyes of the default settings of some few display managers. The error message No protocol specified sounds like an application-specific error message, and an unhelpful one at that, but I am going to guess that ...



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