Q. To replace | with ~, which one of the following commands will be used?

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Q. head -n 3 emp.lst | tr ‘[a-z]’ ‘[A-Z]’

Above command will change the case of text from lower to upper.

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Q. Which option is used with tr command for deleting characters?

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Q. ______ option is used for compressing multiple consecutive characters.

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Q. If there are special characters in a pattern, then we’ve to enclose them in ______

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Q. Which option is used with grep command for ignoring the case in pattern searching?

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Q. Which option is used with grep command for deleting lines?

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Q. Which option is used for displaying the line numbers containing the pattern along with lines?

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Q. ______ option counts the number of lines containing the pattern?

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Q. Which option displays only the filename containing the pattern?

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Q. _____ option is used when we need to match multiple patterns in a single invocation of grep command?

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Q. For taking patterns from a file, -f option is specified with grep command.

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Q. POSIX identifies regular expressions as belonging to ____ categories.

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Q. grep command supports both extended and regular expressions.

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Q. Character class is used for matching a group of characters enclosed within a pair of _____

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Q. The following command will match ‘Agarwal’, ‘agarwal’ and ‘agrawal’.

$ grep “[aA]g[ar][ar]wal” emp.lst

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Q. Which of the following symbol is used for matching the immediate preceding character?

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Q. Which symbol is used for matching a single character?

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Q. Which of the following symbols are used for matching a pattern at specified locations?

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Q. The following command will match the lines beginning with ‘2’.

$ grep “^2” emp.lst

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