Q. What will be the function of the following command?

$ sed ‘s/ *|/|/g’ emp.lst

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Q. Basic regular expressions are divided into ______ categories.

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Q. The interval regular expression uses the character _______

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Q. Which one of the following command will be used for adding two spaces before every line in emp.lst?

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Q. Which shortcut does sed offer to replace the string Linux with Red hat Linux?

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Q. Which command will be used for selecting lines 3 to 10 from emp.lst?

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Q. Which filter apart from perl, is the most powerful?

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Q. Awk filter operates at field level.

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Q. Which of the following will be used to print lines containing ‘manager’ in emp.lst?

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Q. The default action if selection_criteria is missing is ____

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Q. For pattern-matching, awk uses regular expressions in ____ style.

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Q. awk uses ______ for splitting a line into fields.

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

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Q. ____ function breaks up a string on the basis of delimiter.

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Q. For running a UNIX command within awk, we’ve to use ____ function.

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Q. sqroot(x) function returns the square root of x.

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Q. Which of the following is supported by awk?

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Q. print statement is necessary for printing a line.

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Q. awk uses _____ dimensional arrays.

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Q. awk has some built-in functions which are used for arithmetic and string operations.

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