Originally Posted by praky
That means you are rooted.
Honestly, I'm not rooted. I just installed it on my phone. There are comands that are not permitted, and all of the commands that are not permitted on my terminal emulator are not also permitted on my adb shell when I have my phone connected on my PC. So I assune since the command works on adb shell given my current permissions, I guess it will work as well in terminal emulatr even when not rooted.