Exercise 2 : Pipe in shell


Execrise-2 : Modify pipe4.c, make it accept two inputs from command line and pipe them. Your program should run like this ./pipe4 [command1] [command2]. You can assume that command1 and command2 do not have parameters.

when you run your program as ./pipe4 ls less, the result should be the same with running ls | less in shell. If you have installed fortune and cowsay, you may run your program like ./pipe4 fortune cowsay. Interesting result you may see as the picture below.