11. Which option is used with uniq command for selecting non-repeated lines?
12. The following command will. . . . . . . .
!! tr ‘[a-z]’ ‘[A-Z]’
!! tr ‘[a-z]’ ‘[A-Z]’13. Which function is used for handling substitutions in perl?
14. To spawn a child of our own choice for running the script, we can use . . . . . . . . command.
15. For automatic indentation, . . . . . . . . is used with : set command.
16. . . . . . . . . statement matches an expression for more than one alternative.
17. For displaying the archive, -t option is used with the tar command.
18. . . . . . . . . and . . . . . . . . cannot be used in a filename.
19. Which of the following keyword is not supported by at command?
20. Which of the following is not a valid command?
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