Q. The command $ sed -n ‘$p’ emp.lst will display the last line.

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Q. Consider the following commands.

$ sed -n ‘1,2p’ emp.lst
$ sed -n ‘3,$!p’ emp.lst

The output of both commands will be same.

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Q. Which option is used with sed for using multiple instructions?

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Q. ____ option is used for taking instructions from a file.

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Q. sed can also perform the substitution.

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Q. Which one of the following is the correct syntax for performing substitution using sed?

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Q. Which one of the following command is used for replacing | with : globally?

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Q. To replace the string ‘director’ in the first five lines of file emp.lst with ‘manager’ we can use _____

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Q. Which of the following characters are used with sed as anchoring characters?

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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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