Originally Posted by 0b3d1ah
But I have an issue....
I must type "SU" in connect bot or I get "permission denied'.
Once I type "SU", then if I enter your command, I get : "grep: not found"
Try "su", small case. If that still doesn't work, then you've got one of two problems. Either Superuser isn't installed (you did root your Vox, right?) or it's been set to automatically deny permission to your terminal program. In which case you just open Superuser, double tap on the entry for your terminal of choice and hit "forget".