Merge pull request #1102 from jonboiser/pmset

pmset: add page

pages/osx/pmset.md

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+# pmset
+
+> Configure macOS power management settings, as one might do in System Preferences > Energy Saver.
+> Commands that modify settings must begin with `sudo`.
+
+- Display the current power management settings:
+
+`pmset -g`
+
+- Display the current power source and battery levels:
+
+`pmset -g batt`
+
+- Set display to never sleep when on charger power:
+
+`sudo pmset -c displaysleep 0`
+
+- Set display to sleep after 15 minutes when on battery power:
+
+`sudo pmset -b displaysleep 15`
+
+- Schedule computer to automatically wake up every weekday at 9 AM:
+
+`sudo pmset repeat wake MTWRF 09:00:00`
+
+- Restore to system defaults:
+
+`sudo pmset -a displaysleep 10 disksleep 10 sleep 30 womp 1`