Bash Script Error Catching

Question

I am very new to bash scripts, and for my first script attempt I am submitting files to my professor\'s dropbox within the same server.

The code is this:

Answer 1

To check the return code from the previous command, you can use the $? special variable as follows:

if [ "$?" -ne "0" ]; then
  echo "Submission failed"
  exit 1
fi

echo "Submission successful."

Additionally, if you want a clean prompt, you can redired stderr as explained here.

Finally, you can also use this in the script that uses scp, since it works regardless of the command you're using.