71. truncate needs the . . . . . . . . of the file as an argument but ftruncate works with . . . . . . . .
72. Substitution command is an ex-mode command.
73. It is often more convenient to save perl program files with . . . . . . . . extension.
74. The size of /dev/null is always zero.
75. . . . . . . . . option is used when we need to match multiple patterns in a single invocation of grep command?
76. The parent process picks up the exit status of a child using . . . . . . . . system call.
77. To replace a single character, we use . . . . . . . . command
78. While changing permissions in an absolute manner, we explicitly set all the nine bits irrespective of the previous permissions of the file.
79. Commands inputted in command mode don't appear on the terminal.
80. Which of the following is default permission set for directories?
Read More Section(Unix)
Each Section contains maximum 100 MCQs question on Unix. To get more questions visit other sections.