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Unix Operating System Practice Test
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Unix is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs. The main features of UNIX were its simplicity, portability (the ability to run on many different systems), multitasking and multiuser capabilities, extensive library of software, and hierarchical file system. The Full Form of UNIX (also referred to as UNICS) is UNiplexed Information Computing System.

Unix Operating System Practice Test
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25 Questions

1. Which command is used to display and create files?
2. To ascertain what are the contents of the file in your the system the best way would be
3. Which command is used to remove a directory
4. The message of the day is stored in a file called
5. The file for which we do not have write permission can be deleted using the command
6. The command which transcribes the standard input to the standard output and also makes a copy of the same in a file is
7. Which of the following shows the correct hierarchy of arithmetic operations in shell
8. Which of following commands do not belong to multiple file editing commands
9. Which command is used to remove the read permission of the file 'note' from both the group and others?
10. Which command sends the word count of the file infile to the newfile.
11. To read the stale news the option available is
12. The program contained in boot block, that loads kernel into memory is called
13. For a person to receive messages he should have his terminal set to a parameter which will allow him receive messages.The command to set this parameter is
14. To see the last access time of various files in a file system the command is
15. The difference between the commands ps –e and ps –a is
16. In vi editor, forward search is performed using the command.
17. Which of the following special shell variables is used to process number of the last background job?
18. The size of any block in the unix file system is
19. Which option will be used with ps command to slow the entire command line of the process being run?
20. Which of the following options will be used to display number of blocks used by a file?
21. Which option will be used with touch command to change the access time?
22. The statement z=’expr 5/2’ would store in z a value
23. Which of the following is not a unix command
24. When we are executing a shell script the shell acts as
25. The shell metacharacter $# represents

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