(15 marks) Login into the os1.cs.uregina.ca (or os1.cs.uregina.ca) system. At your home directory, type the following commands: Based on your best knowledge learned from Chapter 2, answer the following questions. a) How many processes were created in each command above? b) Explain operations of each command. c) Draw a diagram illustrating the execution of the last command, which includes - Processes modules - Communications mechanism between processes - Resource(s) being used by each process d) Refer to the diagram generated in c), explain again in more detail the execution of the last command