Determine if running on a rooted device

Question

My app has a certain piece of functionality that will only work on a device where root is available. Rather than having this feature fail when it is used (and then show an a

Answer 1

if [[ "`adb shell which su | grep -io "permission denied"`" != "permission denied" ]]; then
   echo "Yes. Rooted device."
 else
   echo "No. Device not rooted. Only limited tasks can be performed. Done."
    zenity --warning --title="Device Not Rooted" --text="The connected Android Device is NOT ROOTED. Only limited tasks can be performed." --no-wrap
fi