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→Using the awk Utility
* You can combine any of the patterns using the Boolean operators '''||''' (OR) and '''&&''' (AND).
* You can use built-in variables (like NR or "record number" representing line number) with comparison operators.<br>For example: '''NR >=1 && NR <= 5'''
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'''Action (execution):'''
* The parameters '''$1''', '''$2''', '''$3''' … '''$9''' represent the first, second and third to the 9th fields contained within the record.
* Parameters greater than nine requires the value of the parameter to be placed within braces (for example: '''${10}''','''${11}''','''${12}''', etc.)
* You can use built-in '''variables''' (like NR or "record number" �representing representing line number<br>eg. '''{print NR,$0}''' (will print record number, then entire record)��.
=INVESTIGATION 1: USING THE SED UTILITY=
