Final answer:
To prevent CTRL+S from hanging, use the 'stty -ixon' command in the terminal.
Step-by-step explanation:
To prevent CTRL+S from hanging, you can use the 'stty -ixon' command in the terminal. This command disables the XON/XOFF flow control, which is what causes the hanging behavior when you press CTRL+S. By executing this command, you can ensure that pressing CTRL+S does not cause the terminal to freeze.