Outline:

1. Shells and fork, revisited
   • fork overview
   • example: forktest.c
   • implementing the main loop via fork, execvp, and wait
   • examples:
     • exectest.c
     • shell208.c
2. File descriptors
   • basics
   • redirection
   • example: redirect.c
3. Caution: avoid “fork bombs”
4. Lab 7: getting started with processes—let’s explore some samples for Assignment #7

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

• Manual pages (e.g., type man <cmd>, replacing <cmd>, in a terminal) for:
  • fork
  • wait
  • execlp
  • execvp
  • signal
• Bryant & O’Halloran Sec. 8.4 (p. 738–756) – read this again if it is no longer fresh; it’s handy for your assignment!