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Hi Ghetz,

Sorry ....

Try this,


sort -nk2,1 inputfile -o inputfile; awk 'NR==FNR{if(s!=$1){j=0;s=$1}a[$1]=++j;next} {if(p!=$1){i=0;p=$1}if(a[p]){$4=a[p]}$5=++i;print }' OFS="\t" inputfile...

NR==FNR is only useful when there is more than one input file. Try this, assuming column one is in sorted order:
awk 'function pr(){if(p)for(i=1;i<=n;i++){print A[i],n,i;delete...