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Hi,

Here's the file I'd like to get:

d

For instance the first three lines are not in file1, but are in file2. I'd like to keep them in the final file3. So basically I'd like to add the...

Hi,

Thanks a bunch! It work! Got now a new file with this code:

awk 'NR==FNR{A[$1]=$2;next}A[$1]{$2=A[$1] FS $2;print}' file2.txt FS=, OFS=, file1.txt > file3.txt

Thank you also for pointing...

Hi,

On a similar subject, the following. I have two files:

file1.txt
dbSNP_rsID,Chromosome,Position,Gene
rs10399749,chr. 01,45162,?
rs4030303,chr. 01,72434,?
rs4030300,chr. 01,72515,?...