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Computer Science · all questions

UNIX
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Which of the following macro returns true if the file type is a directory?

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We can display an alias definition by using an alias with the name.

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To replace 5 characters with new characters, which one of the following will be used?

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Pathname is a sequence of symbols and directories indicating the location of a file.

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. . . . . . . . section can be used if we've to print something before processing the first line.

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What is the default symbol for command prompt in Bourne shell?

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Which command is used for making the scripts interactive?

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In . . . . . . . . mode, the kernel runs on behalf of the user.

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Which command is used for preparing a file for printing?

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Which of the following function(s) are performed by an interactive shell?

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Which symbol is used as a shorthand for using the last argument to the previous command?

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We should avoid filenames starting with a - (hyphen).

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. . . . . . . . command allows superuser to communicate with users.

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To check if the file exists and is executable we have to use . . . . . . . . option with test.

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We can also use -n option with tail command.

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The command df. will . . . . . . . .

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Which system call is used by the parent process to wait for the child process to complete?

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Which option is used for the recursive functioning of chmod command?

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Which symbol is used to connect different streams?

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The sources from where the signals can be generated are:

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