Add bat.sh post.

diff --git a/posts/bat/bat.sh b/posts/bat/bat.sh
new file mode 100755 (executable)
index 0000000..b7c0a5c
--- /dev/null
+++ b/posts/bat/bat.sh
@@ -0,0 +1,29 @@
+#!/bin/bash
+#
+# Print battery status/percentage
+#
+# Copyright (C) 2010 W. Trevor King <wking@drexel.edu>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+BAT="BAT0"
+SYSPATH="/sys/class/power_supply/$BAT"
+
+STATUS=$(cat "$SYSPATH/status")
+CAPACITY=$(cat "$SYSPATH/charge_full")
+LEVEL=$(cat "$SYSPATH/charge_now")
+PERCENT=$(python -c "print($LEVEL * 100. / $CAPACITY)")
+
+echo -e "$STATUS\t$LEVEL/$CAPACITY ($PERCENT%)"