04-24-2013
The short answer is yes.
But, I'm not sure I understand your requirements. If you want help creating an awk script to perform this taks, please answer the following questions:
- Do you want input fields 2 and 4 to be removed from every input line?
- If the value in input field 1 is not a constant in each set of four input lines, what happens?
- Is that set skipped? If so, should an error be printed?
- Should the value from the first line in the set be printed?
- Should the value from the last line in the set be printed?
- If the value in input field 3 is not a constant in each set of four input lines, what happens?
- Is that set skipped? If so, should an error be printed?
- Should the value from the first line in the set be printed?
- Should the value from the last line in the set be printed?
- Is the number of fields a constant for a given input file?
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