You need to reset your grace environment if, unfortunately, you are repeating this course. To start the resetting process, execute the following script in your grace account:
The script will reset your dotfiles, like .path, .cshrc.mine, etc., to new unchanged versions. Previous files will be renamed (e.g., .aliases file as .aliases-23-05-27).
After running the above script, verify whether you have a 216 and/or a 216public folder in your grace home directory. If that is the case, remove them. Before removing the 216 folder, you may want to copy the 216 folder (e.g., cp -r 216 old216) in case you would like to preserve any previous work. To remove the 216 and 216public folders execute rm -f -r 216 216public
At this point you are ready to run the setup command provided by your instructor.