Created
August 28, 2016 13:27
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| # Credit to Martinus at | |
| # http://www.irishastronomy.org/index.php?option=com_kunena&view=topic&Itemid=211&catid=28&id=90354 | |
| # make your screen only show red tones | |
| for c in green blue; do | |
| xcalib -$c .1 0 1 -alter | |
| done | |
| # reset it with "xcalib -clear". |
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