termux-tools: Add su wrapper

diff --git a/packages/termux-tools/su b/packages/termux-tools/su
new file mode 100755 (executable)
index 0000000..bffa122
--- /dev/null
+++ b/packages/termux-tools/su
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+if [ -x /system/xbin/su ]; then
+       /system/xbin/su $@
+else
+       echo "There is no su program on this device. Termux"
+       echo "does not supply tools for rooting, see e.g."
+       echo "http://www.androidcentral.com/root for"
+       echo "information about rooting Android."
+       exit 1
+fi