Computer Science · all questions

UNIX
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Q721

Which of the following system call is preferred over dup and dup2 for replicating file descriptor?

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Q722

To copy 10 lines from the current cursor location, we can use . . . . . . . .

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Q723

Kill -l will list all the signal numbers on our machine.

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Q724

Which of the following operator is used with find command for performing the negate function?

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Q725

Which option is used by the sort command to redirect the output to a specified file?

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Q726

Which one of the following forms used with at command is invalid?

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Q727

Which function can combine the functionalities of push, pop, unshift and shift?

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Q728

Which one of the following is arguably the best shell to use?

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Q729

For compiling a C program without leaving the editor, which command will be used?

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Q730

Which of the following is not an internal command for more?

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Q731

When two files are identical, what is the output of diff command?

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Q732

Which of the following command will remove the current crontab?

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Q733

In a pipeline, the command on the left of | must use standard output and one on the right must use standard input.

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Q734

We can list the jobs queued using at command by using . . . . . . . . option.

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Q735

Which option is used with unzip command to view the contents of a compressed archive?

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Q736

Which of the following are concatenation operators?

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Q737

Which of the following functionalities is carried by the root user?

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Q738

Which command is used for compressing and archiving files together?

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Q739

To select lines containing gupta and agarwal, which command will be used?

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Q740

awk allows the user to use variables of his own choice.

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