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Objective - Tiny Shell (tish)
In this exercise you will write a small shell program to run different programs in foreground and background mode.
Usually when you login on to the system the program that takes control and takes care of your requests is the "shell" program. In this exercise you will implement only a small portion of the shell capabilities.
Your assignment is to build a program "tish" that will implement the following shell services:
The precise requirements are as following:
You may use "stdio" library functions in order to read user's input and to print the messages. You are advised to use string library functions, such as strtok() to manipulate strings.
Describe the purpose of the checkpoint mechanism. How habitually must checkpoints be performed? Explain how the frequency of checkpoints affects: System performance while no
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