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Running x-window applications from cron job

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linux-howto

https://www.centos.org – You could try to create a virtual (persistent) X session using Xvfb (package xorg-x11-server-Xvfb and a startup command like "/usr/bin/Xvfb :1 -screen 0 1024x768x24") then "export DI... [by pjwelsh] (Distributions)