Q. Which of the following symbol is used for negating the character class?

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Q. Which of the following shell doesn’t support ! symbol for negating the character class?

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Q. The command cd * will work.

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Q. Providing a backslash (\) before the wild card to remove its special meaning is called _____

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Q. Enclosing the wild card or the entire pattern within quotes is called ___

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Q. Redirection is a process of switching of the standard stream of data.

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Q. How many files are used for representing different streams?

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Q. Which stream is connected to the display?

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Q. Which stream is used for representing error messages?

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

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Q. Which symbol is used for taking input from both file and standard input?

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Q. Which of the following symbol(s) can be used to redirect the output to a file or another program?

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Q. The >> symbol is used to overwrite the existing file if it exists.

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Q. Which file descriptor is used to represent standard error stream?

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Q. We can redirect the error message to file named newfile using __________ command.

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Q. The category of commands which uses both standard input and standard output are called ____

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Q. The contents of file001 are:

232
25*50

What will be the contents of result.txt?

bc < file001 > result.txt

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Q. Which of the following files are known as special files in UNIX?

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Q. The size of /dev/null is always zero.

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Q. Which symbol is used to redirect error messages to /dev/null?

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