Q. Which one of the following command will be used for searching “director” in emp.lst?

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Q. When the pattern is not found in a file, grep command silently returns the prompt.

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Q. grep command can be used for searching a pattern in more than one file.

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Q. Which of the following is not a subset of BRE (basic regular expression) character subset?

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Q. Which of the following commands is known as stream editor?

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Q. What is the correct syntax for using sed?

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Q. Which one of the following command will be used for quitting after selecting 3 lines from file emp.lst?

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Q. Which of the following command is used with sed for outputting as well as printing the selected lines?

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Q. To suppress the behaviour of ‘p’ command, we use ____ option.

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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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