Laboratory Assignments of Operating Systems

1. Write a shell script to print the Full name, user-name and user-ids of the currently logged in users. The output format may be like -

   1 Utpal Sharma, utpal, 501
   2 Bhabesh Nath, bnath, 503

2. Using shell programming, implement a feature such that when you log into your account, a "Good Morning", "Good Afternoon" or "Good Evening" is printed on the terminal depending on the system's clock-time.

Write a program that simulates process creation requests in a computer and observe the fragmentation due to different memory partitioning methods and allocation strategies (first-fit, best-fit, next-fit, worst-fit).

The process creation requests simulator should create processes of random durations and sizes, and there should be to provision to view the fragmentation at different instances.