This document instructs the reader to write a shell program that is similar to the example shell program shown in Figure 1-19, but contains fully functioning code that can be tested. The reader is also encouraged to add additional shell features such as input/output redirection, pipes, and background jobs to the program.

1. 34. Write a shell that is similar to Fig. 1-19 but contains enough code that it actually works so you can
test it. You might also add some features such as redirection of input and output, pipes, and background
jobs.