11. Which option is used for sorting a file according to primary key?
12. For escaping the newline character we can use . . . . . . . .
13. The following command will produce an error.
$ cut -d "|" -f 1,4 emp.lst
$ cut -d "|" -f 1,4 emp.lst
14. The expression used with chmod command to change permissions in a relative manner contains . . . . . . . . components.
15. grep command supports both extended and regular expressions.
16. A process is an instance of . . . . . . . . program.
17. Which of the following command is not used for entering or replacing text?
18. The stack stores the . . . . . . . .
19. Which command is used for premature termination of a process?
20. UNIX allows the system administrator to use the only chown to change both owner and group.
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