41. -a option is used with ls command for what purpose?
42. Which of the following cryptic symbols are used in relative pathname?
43. -u option sorts the files according to . . . . . . . .
44. Which option is used with shutdown command to override the default waiting time?
45. Which stream is used for representing error messages?
46. The command wc < sample.txt will count data from the file sample.txt.
47. To replace the entire line irrespective of cursor position, we can use . . . . . . . . command
48. $ cp -f copies forcefully.
49. Which of the following expression is a correct wildcard pattern if we want an expression in which the last character is not numeric?
50. Which one of the following key is used to switch from command mode to input mode?
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