Some things won’t respond to Ctrl+C; in that case, you can also do Ctrl+Z which stops the process and then kill %1 – or even fg to go back to it. Read the section in man bash entitled “JOB CONTROL” for more information. It’s very helpful. (If you’re not familiar with man or the man pager, you can search using /. man bash then inside it /JOB CONTROLEnter will start searching, n will find the next match which is the right section.)