Open filipsch opened 6 years ago
From glancing at the exercise, which is titled "How can I stop a running program?", it seems like one alternative is that the exercise starts a running program in the PEC. Then, any student that stops it (causing the SCT to run) has successfully stopped a running program.
In bash specific language, it sounds like this question is asking how to tell a student has sent the SIGINT signal. So if that's the goal, then running a program that only closes for SIGINT seems like it would do it.
If you really didn't want to run a program in PEC, you could run PEC to trap SIGINT:
https://stackoverflow.com/questions/15785522/catch-sigint-in-bash-handle-and-ignore
@gvwilson commented on Thu May 17 2018
From https://github.com/datacamp/courses-intro-to-unix-shell/issues/131: if the user types
cat > output.txt
instead ofcat input.txt > output.txt
, the command hangs up waiting for user input. We ask them to do something like this at one point in order to teach them how to use^C
to stop programs, but their^C
isn't passed to the SCT, so we have no way to check if they used it or not.