Can't run some commands in "Send Command"

[paladini]

I can't run some commands in the student machine from the teacher machine using the "Send Command" feature. To check this feature, open the BigScreen mode for some computer, then go to "actions" and click on "Send Command" button.

How to reproduce:

1. Open the BigScreen mode for some computer.
2. "Actions -> Send Command" in the BigScreen.
3. Send commands like: echo "test" >> /home/myCuteUser/Desktop/test.txt or touch /home/myCuteUser/Desktop/test.txt".

These commands didn't run / work here (and give no error message). However, mkdir worked. Tried using Fedora 22 (Teacher) -> Ubuntu 12.04 (Student).