More importantly, I would certainly avoid changing the permissions of system files. However, if you prefer not to install evince , you can also replicate the functionality of evince-thumbnailer using imagemagick 's convert command. One of my big aims now is to learn how to fully defend a system against weirdos like that. Things went well and the computer is blissfully quite, but there are a few hiccups:. GVfs does not force you to have your system connected to a network.
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