Hi I am a perl newbie and have a real life problem that I am trying to solve:

I have a file with 4 columns of data:

HWUSI-EAS95L_0025_FC:3:1:5232:1082#0/1 - 1449586 1449619

HWUSI-EAS95L_0025_FC:3:1:5232:1082#0/2 - 1449544 1449577

HWUSI-EAS95L_0025_FC:3:1:6417:1078#0/1 - 4744083 4744113

HWUSI-EAS95L_0025_FC:3:1:6539:1083#0/1 - 4867122 4867157

HWUSI-EAS95L_0025_FC:3:1:6539:1083#0/2 - 4866942 4866977

HWUSI-EAS95L_0025_FC:3:1:10260:1083#0/1 + 1930232 1930266

HWUSI-EAS95L_0025_FC:3:1:10260:1083#0/2 + 1930354 1930389

I would like to be able to match the lines within the first column based on name

ie

HWUSI-EAS95L_0025_FC:3:1:5232:1082#0/1 and HWUSI-EAS95L_0025_FC:3:1:5232:1082#0/2

belong together and then parse out information (1449586) from column 3 for the first line

and (1449577) column 4 for the matched second line.

Where there is no matched pair eg HWUSI-EAS95L_0025_FC:3:1:6417:1078#0/1

I want to skip onto the next line and look to see if there is another matched

pair.

Any pointers would be appreciated.

Thanks

Gary

In reply to compare lines within a file by garyboyd

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