diff --git a/df-custom.sh b/df-custom.sh
new file mode 100755
index 0000000..5cde83d
--- /dev/null
+++ b/df-custom.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+if (( "0" == "$#" )); then
+    device="/"
+
+    usage=`df --output=pcent $device | tail -n 1 | grep -oE '[0-9]+'`
+    open=`echo "100 - $usage" | bc`
+    avail=`df --output=avail -h $device | tail -n 1`
+
+    echo "Available: $avail ($open%) $device"
+
+    exit
+fi
+
+for device in "$@"; do
+
+    usage=`df --output=pcent $device | tail -n 1 | grep -oE '[0-9]+'`
+    open=`echo "100 - $usage" | bc`
+    avail=`df --output=avail -h $device | tail -n 1`
+
+    echo "Available: $avail ($open%) $device"
+
+done
+