How to properly use Terminal Emulator shortcut widget commands?

Hello!

I want to create a homescreen widget shortcut for Terminal Emulator to do the following command line:

Code:

---

killall -9 mediaserver

---

To do so, I created a sh file type with the following lines and moved it to /system dir with rwxrwxrwx permissions:

Code:

---

#!/system/bin/sh
su
killall -9 mediaserver
exit
exit

---

And then created a widget with Term shortcut with this text on argument window:

Code:

---

su -c "sh  /system/camscript.sh"

---

The problem is: When I select the Terminal Icon on my homescreen, it open the terminal emulator appears

Code:

---

u0_a912@mo:/ $ su -c "sh /system/camscript.sh"
root@m0:/ #

---

The thing is that I want it to execute the command and exit the terminal emulator prompt by itself.

Can anyone help me?

Thanks