Fair warning, I am very new to PLINK and to the command line in general. I downloaded my bed, bim, and fam files from this website. However, the bim and fam files are formatted as .txt files. As a result, when I type
plink --bfile dgrp2
it returns 'ERROR: No such file [ dgrp2.fam ] exists' because the file is named dgrp2.fam.txt. I tried renaming the files without the "txt" but it wouldn't let me. Advice would be greatly appreciated.