41. What is cron?
42. Which built-in variable is used by the awk to specify the line numbers?
43. POSIX is a set of standards specified for establishing compatibility between operating systems.
44. Which command is used for killing a line?
45. Which option is used with pr command for printing multi-columnar output?
46. Which control unlocks the keyboard?
47. To remove write permission from group and others, which one of the following commands will be used?
48. Which of the following is not a valid option of uname?
49. For moving two level up in the file hierarchy system using cd command once, we separates ( . . ) by which symbol?
50. -t option prints the title on the first page.
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