I would greatly appreciate any help. The file that I am trying to alter is in the format 23 SNP_A-4293670 0 2713391 with separation by tabs. The second file is in the format SNP_A-1780270 ss75925050 rs987435 with separation by spaces. I want the first file to look like this: 23 rs###### 0 2713391 which means that I want the data in second column of the first file to be replaced with the data in the third column of the second file if it matches the first column of the second file. Thanks

In reply to Replace data in the column of one file with corresponding ones in another file by Renyulb28

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