Thanks every body for the help Basically my output file 1 at the moment is a file with 1 column with rs values like


rs3547689

rs325678912

rs36789012

etc

I need now to find these value in file 2 and print out the line or in a separated file
The file 2 looks like
XXX XXX XXX XXX XXX XXX (1050 times)

rs3507865 AA AT AT AT TT AA (1050 values)

rs3456189 GG GC GG CC CC .....

more than 700 rows
Can you gimme a suggestion for keys for the hash? Can be row number even if I can not write on file 2? Cheers again

In reply to Re^3: General program and related problems by micky744monk
in thread General program and related problems by micky744monk

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