BCA 406: UNIX PROGRAMMING MAY/JUNE 2010 QUESTION PAPER

                            IV Semester B.C.A  Degree Examination, May 2011
                                                        Y2K8 SCHEME
                                                 COMPUTER SCIENCE
                                       BCA 406 : UNIX PROGRAMMING

TIME :3HOURS                                                                                                 MAX.MARKS:60

SECTION-A

Answer any ten quesitons:

1.what is the use of who command ?

2.Mention the comands used to create file.

3.What is the use of ln command ?




4.What is the use of nice command ?

5.Which is the command used to make file system ?

6.How the number of words in file can be counted ?

7.What is interrupt?

8.Mention the different modes of vi editor ?

9.What is the system defined variable ? Give one example.

10.Write the syntax of if statement .

11.what is the use of wall command ?

12.What are Daemons ?

SECTION-B

Answer any five questions :  5 X 3 = 15

13.Explain diffeerent types of command with example.

14.Explain file permission.

15.Explain process scheduling commands.

16.Explain disk partitioning.

17.Explain system calls with examples .

18.Explain the positional parameters

19.What is the use of write wall and mail commands ?

20.Explain user management in unix .

SECTION-C

21. a) Explain the salient features of UNIX.

      b) Explain the command to change file permission.

22.Explain the differnet blocks in file system.

23. a)Explain the different states of process.

     b)Explain the usage of nohup command.

24.a)Explain file permission.

       b)Explain disk related comand.

25.what is filter ?Explain the filter commands with example.

26.explain different testing with example.


27,.what is control statement? Explain diffferent if statements with  examples.

28.Write a shell script to count the number of vowels in a given string.