Shell Programming and Scripting

Hi guys.

I'd just like to know if its possible to change the actual line/row position in awk while its busy processing a file. In other words, is it possible to jump from line 10, back up to line 5 and continue processing line-by-line from then onwards? or is the way around this to add all lines to an array and jump between lines within the array?

Example:
A file contains N records. Each record has a corresponding/matching record (in no particular order)

record1(pair1)
record2(pair2)
record3(pair3)
record4(pair1) #match for record1
record5(pair4)
record6(pair3) #match for record3
record7(pair2) #match for record2
...
..
.

A generic script to hopefully assist in my explaination.

Code:

BEGIN { numPairsFound = 0;
        while(getline > 0) {
           found="false";
           count=0;
           if($0 ~ "one") { #assume pair1 is unique and will never be read in again by awk
              pair1=$0; 
              while(getline > 0) {
                 if($0 ~ "two") { #matching record found
                   pair2=$0; 
                   found="true";
                   break;
                 }
              }
           }   
           if(found == "true") {
              printf("%s\n","Pair found:");
              printf("%s\n",pair1);
              printf("%s\n",pair2);
              numPairsFound++;
           }           
        }
}
END { print "Number of pairs found: " numPairsFound; }

I apologize in advance if this question has already been asked.

Can you please post the output that you are expecting.

No, you cannot "jump" back, but you can always process the same file twice in one go.
If you provide a more descriptive sample input and a desired output, we could probably avoid guessing/jumping...

Wow, that was quick. Thanks for your responses guys.

Sorry, I'm unable to provide you with a more descriptive sample input. vgersh99, your response was all I needed. I can now go and explore other solutions.

Thanks again.