Vidyalelo
Computer Science · all questions

UNIX
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-a option is used with ls command for what purpose?

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Which of the following cryptic symbols are used in relative pathname?

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-u option sorts the files according to . . . . . . . .

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Which option is used with shutdown command to override the default waiting time?

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Which stream is used for representing error messages?

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The command wc < sample.txt will count data from the file sample.txt.

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To replace the entire line irrespective of cursor position, we can use . . . . . . . . command

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$ cp -f copies forcefully.

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Which of the following expression is a correct wildcard pattern if we want an expression in which the last character is not numeric?

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Which one of the following key is used to switch from command mode to input mode?

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Which command is used to change the permissions of a file?

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We can provide original filenames without .gz extension while checking compression ratio using gzip - l?

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If a file is read protected, we can write to the file.

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Which of the following are history variables?

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Which of the following control keys will be used for scrolling one page forward?

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It is better to use & with nice command.

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Every shell uses at least one startup script in the user's home directory, which is executed when the user logs in.

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Which command is used for changing filename extensions?

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What are meta-characters?

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POSIX recommends the use of . . . . . . . . instead of archaic `command ` for command substitution.

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