Outline:

1. Caution: avoid “fork bombs”
2. Shells
   • many shell programs exist: bash, zsh, PowerShell, …
   • prompt-read-execute loop
   • see Lab 6 for relevant samples
3. Storage and the memory hierarchy
4. Cache overview
   • motivation: spatial/temporal locality
   • basic principles
5. Cache types
   • direct-mapped
   • fully associative
   • set-associative

Suggestions for Assignment #9:

• Pick one option and try it out!
  • Networking: try to print a string containing only the first line of the request, and then get the hostname
  • Operating Systems: use fork to spawn a child process in a prompt-read-execute loop, and hard-code it to call ls

Reading assignment (to be completed by the next class):

• Read: DiS Sec. 11.1: The Memory Hierarchy
• Skim: DiS Sec. 11.2: Storage Devices
• Read: DiS Sec. 11.4: Caching