Ubuntu
Ubuntu Resourses
Support:
Ubuntu Forums – http://ubuntuforums.org
Ubuntu Help – https://help.ubuntu.com or https://wiki.ubuntu.com
Ubuntu Talk:
#ubuntu-* on irc.freenode.com – https://help.ubuntu.com/community/InternetRelayChat
Ubuntu Hints and Tweaks:
1. Get screen DPI
xdpyinfo | grep resolution
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