Added script for execution as a particular user.

diff --git a/Library/asuser b/Library/asuser
new file mode 100755 (executable)
index 0000000..a4285a6
--- /dev/null
+++ b/Library/asuser
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+version=$(sw_vers -productVersion)
+
+if [[ ${version} = 1.0* || ${version} = 1.1.[012] ]]; then
+    user=root
+else
+    user=mobile
+fi
+
+su -c "${user}" "$@"