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+---
+title: OS X Battery Percentage Command Line
+author: Brett Langdon
+date: 2012-03-18
+template: article.jade
+---
+
+Quick and easy utility to get OS X battery usage from the command line.
+
+---
+
+Recently I learned how to enable full screen console mode for OS X but the first
+issue I ran into was trying to determine how far gone the battery in my laptop was.
+Yes of course I could use the fancy little button on the side that lights up and
+shows me but that would be way too easy for a programmer, so of course instead I
+wrote this scripts. The script will gather the battery current and max capacity
+and simply divide them to give you a percentage of battery life left.
+
+Just create this script, I named mine “battery”, make sure to enable execution
+“chmod +x battery” and I moved mine into “/usr/sbin/”. Then to use simply run the
+command “battery” and you’ll get an output similar to “3.900%”
+(yes as of the writing of this my battery needs a charging).
+
+```bash
+#!/bin/bash
+current=`ioreg -l | grep CurrentCapacity | awk ‘{print %5}’`
+max=`ioreg -l | grep MaxCapacity| awk ‘{print %5}’`
+echo `echo “scale=3;$current/$max*100″|bc -l`’%’
+```
+
+Enjoy!