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Computer Science · all questions

UNIX
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write system call returns -1 when . . . . . . . .

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Apart from its use in redirection, /dev/tty can also be used as an argument to some commands.

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script command is used for. . . . . . . .

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For removing a link, . . . . . . . . is used.

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Which option is used with the tail command for extracting bytes instead of lines?

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Directories can also be opened, read and written in the same way as regular files.

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Which of the following is used for creating user's environment?

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How many types of permissions a file has in UNIX?

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In ex-mode, current line is represented by . . . . . . . .

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To remove a job from the queue, which option is used with at command?

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Which command is used for displaying the beginning of a file?

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A shell script stopped running when we change its name. Why?

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What is the default disposition of most signals?

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Which of the following system call is used for replicating a process?

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Which option is used with ls command for long listing of files with seven attributes?

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What is a job?

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Which option is used with ls command to list the directory attributes rather than its contents?

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To check more than two conditions, . . . . . . . . is used with if-else statements.

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Shell provides us with an interface to the operating system.

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For deleting the elements from the right of the array . . . . . . . . function is used.

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