CS208 Introduction to Computer Systems
Wednesday, 10 May 2023

- What is a process?
- Signals
- Interprocess communication

+ Command shell (bash, zsh, etc)
- >
- <
- |
- lots more: &, <<<, 2>&, etc.

+ System functions you will need
- fork
- exec
- signal
- pipe
- dup2

- a couple handy utility functions
    - fflush (especially helpful for debugging)
    - strtok (helpful for setting up command-line arguments)

+ Let's play with samples

    for each sample:
        read it and try to predict its behavior
        run it
        write down a one-sentence description of what it does
        swap descriptions with a neighbor and discuss
        make note of remaining questions

    samples
        files.c
        forktest.c
        getanumber.c
        exectest.c
        shell208.c
        [we'll do more on Friday to help you with >, <, and |]