Q. In UNIX, processes that have finished execution but have not yet had their status collected are known as ................

View solution

Q. In UNIX operating system, when a process creates a new process using the fork() system call, which of the following state is shared between the parent process and child process?

View solution

Q. Which of the following information about the UNIX file system is not correct?

View solution

Q. Which of the following option with reference to UNIX operating system is not correct?

View solution

Q. What is the function of following UNIX command?

WC – l < a >b&

View solution

Q. Which of the following statement is not correct with reference to cron daemon in UNIX O.S?

View solution

Q. In Unix, files can be protected by assigning each one a 9-bit mode called rights bits. Now, consider the following two statements:

I. A mode of 641 (octal) means that the owner can read and write the file, other members of the owner’s group can read it, and users can execute only.
II. A mode of 100 (octal) allows the owner to execute the file, but prohibits all other access.

Which of the following options is correct with reference to above statements?

View solution

Q. In Unix, the login prompt can be changed by changing the contents of the file ...............

View solution

Q. A unix file system has 1-KB blocks and 4-byte disk addresses. What is the maximum file size if i-nodes contain 10 direct entries and one single, double and triple indirect entry each?

View solution

Q. In Unix operating system, special files are used to :

View solution

Q. Match the following in Unix file system :

List - I                         List - II
(a) Boot block               (i) Information about file system
(b) Super block            (ii) Information about file
(c) Inode table              (iii) Storage space
(d) Data block               (iv) Code for making OS ready

Codes :
      (a)  (b)  (c)  (d)

View solution

Q. In Unix, the command to enable execution permission for file “mylife” by all is ................

View solution

Q. What will be the output of the following Unix command ?

$rm chap0\[1 - 3\]

View solution

Q. Which of the following out commands will output "onetwothree"?

View solution

Q. Assume that an implementation of Unix operating system uses i-nodes to keep track of data blocks allocated to a file. It supports 12 direct block addresses, one indirect block address and one double indirect block address. The file system has 256 bytes block size and 2 bytes for disk block address. The maximum possible size of a file in this system is

View solution

Q. Which of the following set of Unix commands will always display “WELCOME” ?

View solution

Q. Which of the following shell scripts will produce the output “my first script” ?

View solution

Q. Which of the following statements is not true for UNIX Operating System ?

View solution

Q. Consider the following UNIX command:

sort < in > temp; head -30 < temp; rm temp

Which of the following functions shall be performed by this command?

View solution

Q. The mv command changes

View solution