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→Using the sed Utility
'''Address:'''
*can use a line number, to select a specific line (for example: 5)
*Note: when using regular expressions, you must delimit them with a forward-slash"/" default address (if none is specified) will match every line
'''Instruction:'''
*Action to take for matched line(s)
*Refer to table on right-side for list of some common instructions and their purpose
