An Even Better Shell.

Add to your existing shell program the ability to process the symbols
<, >, and |, when they appear on the command line.

As you will no doubt remember:
   < is used to redirect a program's standard input so that it comes
     from a file, e.g. a.out < inputs.txt
   > is used to redirect a program's standard output so that it goes
     into a file, e.g. a.out > results
   | is used to pipe the standard output of one program into the standard
     input of another, e.g. a.out | wc