Write a program for the following problems. It is recommended that the programs should be written and run on Ubuntu environment using C/C++. However, students can also use other tools to accomplish the following tasks, such as using Java on Win32 API, etc. a) Create a (child) process that may or may not copy the parent address space and then make the child as a zombie process. Use ps utility to demonstrate that the zombie has been created. Please note that the zombie process will be depicted as . b) Use the procedure followed in 1(a) to make the child process as orphan. Using ps utility to show that the orphan process has been handed over to the init process who's pid is 1. c) Create a child process that executes the following commands from the command line. You can use the exec () family of system calls. a. Is (with switches/parameters, such as > > Is -l) b. echo (with a string parameter, such as > echo this is OS class and echo SPATH) c. pwd