Section 21.6. Summary

21.6. Summary

This chapter has examined in detail two complete programs: a print spooler daemon that sends a print job to a network printer and a command that can be used to submit a job to be printed to the spooling daemon. This has given us a chance to see lots of features that we described in earlier chapters used in a real program: threads, I/O multiplexing, file I/O, socket I/O, and signals.