91. Which of the following is not a valid symbolic constant?
92. Which of the following command is a substitute for ':x' command?
93. The syntax for using && is . . . . . . . .
94. A file has permissions as rwx r– —. A user other than the owner cannot edit the file.
95. . . . . . . . . option is used for checking whether a particular file is older than a specified file.
96. When we execute a C program, CPU runs in . . . . . . . . mode.
97. When fork() is invoked, the child process created gets a new PID.
98. tar command can use the standard input to obtain its file list.
99. Which option is used by ps command to get a detailed listing of process attributes?
100. Which of the following symbol is used for negating the character class?
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