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Loop over awk or passing parameter

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# 8  
Old 12-02-2014
You want while read A B C otherwise B will be 55518622 rs45613943 1.983654e-08.

Otherwise, try it and see.
# 9  
Old 12-03-2014
There's some strange conditions involved, so I'm not too confident in the solution. Anyhow, with your sample data, try
Code:
awk     '               {min=1E100; max=-1E100; P=0
                         FN="chr"$1"_GEN2bim"
                         while (1 == getline X < FN)
                                {split (X, T)
                                 if ((T[4] > $2 - 500000) && (T[4] < $2 + 500000))
                                        {if (T[4] < min) min = T[4]
                                         if (T[4] > max) max = T[4]
                                         P=1
                                        }
                                }
                         if (P) print "chr"$1, min, max
                         close (FN)
                        }
        ' given
chr2 98000253 98000253
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