41. Which of the following command is used for switching files?
42. . . . . . . . . command is used for sorting a file on specified fields.
43. The interval regular expression uses the character . . . . . . . .
44. Which part of the UNIX operating system interacts with the hardware?
45. Which function is used by perl for reversing a string?
46. On a UNIX system, there can be . . . . . . . . shells running simultaneously.
47. test command can be used to check which of the following?
48. Which command is used to reverse the direction of repeating the search?
49. For searching a character, . . . . . . . . and . . . . . . . . are used.
50. What are the permission of file01 after executing this command?
chmod 777 file01
chmod 777 file01
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