6.6. Signals and Interrupts

Try these first

1. 1.

   What is a signal in the context of Linux programming?

   Hint

   Think about events that might require a user program to take action.

2. 2.

   Explain the difference between SIGINT and SIGTERM.

   Hint

   Consider how you would want a program to behave when asked to stop.

3. 3.

   What signal is generated by pressing Ctrl+C?

   • SIGINT
   • SIGTERM
   • SIGKILL

   Hint

   Think of what the user intends to do when they press Ctrl+C.

4. 4.

   Signals can be ignored by processes.

   • True
   • False

   Hint

   Consider whether all signals can be handled the same way.

5. 5.

   Describe the implications of ignoring SIGTERM in a long-running application.

   Hint

   Think about what happens if a process does not clean up after itself.

6. 6.

   Create a program that handles multiple signals and executes different actions for each.

   Hint

   Consider defining different functions for handling different signals.