Linux task 3 not working

Hey Guys.
My linux task 3 is not working and I have no idea why.
The following is my code and if anyone can help it would be much appreciated.

Code

cd $/home/user/catkin_ws/src/linux_exam/this/is/my/linux/exam
rm -f
touch exam1.py exam2.py exam3.py
chmod 754 exam1.py
chmod 501 exam2.py
chmod 241 exam3.py

Found my mistake, it was the $