81. To override the default action and catch the signal . . . . . . . . system call is used.
82. We can move back to the previous file using . . . . . . . . command.
83. Which option is used for counting the number of words in a file only?
84. To create a new window, . . . . . . . . can be used.
85. Which command is used for computation and string handling?
86. User’s environment mode created using su – is terminated using . . . . . . . .
87. To write selected lines, . . . . . . . . is used with sed.
88. The root directory is represented by . . . . . . . .
89. Which of the following is used for storing the number of positional parameters?
90. The environment variables are available in . . . . . . . .
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