Nalanda Open University
Annual Examination 2016
Bachelor in Computer Application Part-II
Paper-VIII (Introduction to System Software) CS-63
Time: 3.00 Hrs. Full Marks: 100(80+20)
Answer any four questions. All questions carry equal marks.
1. Write a shell script to rename any file name given as a command argument.
2. List and execute the following UNIX commands:
To change the password of a user.
To display the long listing of all, the files in the current directory.
To select all the file-names whose file name starts with "t" in the current
directory?
To run any process at background.
To search for a particular pattern in a file and display its count (no. of occurrences
3. Write a shell program to find whether a given number is an Armstrong number or
not. (Example: 153 is Armstrong number as 153 13+53+33).
4. What are the limitations of a one-pass assembler? Explain the additional tasks that
are performed in two pass assemblers over one-pass assemblers.
5. Explain necessary conditions for the occurrence of a Deadlock.