Add util scripts + volume key bindings

my_home/.config/openbox/rc.xml

@@ -389,6 +389,16 @@
         <command>dmenu_run</command>
       </action>
     </keybind>
+    <keybind key="XF86AudioRaiseVolume">
+      <action name="Execute">
+        <command>volume_up.sh</command>
+      </action>
+    </keybind>
+    <keybind key="XF86AudioLowerVolume">
+      <action name="Execute">
+        <command>volume_down.sh</command>
+      </action>
+    </keybind>
   </keyboard>
   <mouse>
     <dragThreshold>1</dragThreshold>

my_home/bin/show_battery.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env sh
+
+envstat -s "acpibat0:charge,acpibat1:charge"

my_home/bin/sleep_laptop.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env sh
+
+sysctl -w hw.acpi.sleep.state=3

my_home/bin/volume_down.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env sh
+
+volume_level=`mixerctl -n outputs.master | cut -d ',' -f 1`
+
+mixerctl -w outputs.master=`expr $volume_level - 10`

my_home/bin/volume_up.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env sh
+
+volume_level=`mixerctl -n outputs.master | cut -d ',' -f 1`
+
+mixerctl -w outputs.master=`expr $volume_level + 10`

my_home/bin/watch_battery.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env sh
+
+envstat -s "acpibat0:charge,acpibat1:charge" -i 60