https://bioinformaticsonline.com/thewire/thread/37255? https://bioinformaticsonline.com/thewire/view/37255 Mon, 09 Jul 2018 04:51:51 -0500 https://bioinformaticsonline.com/thewire/view/37255 Replace lowercase to N. perl -pe '/^[^>]/ and $_=~ s/[a-z]/N/g' genomic.fna > genomic.N-masked.fna #Mask #Lowecase2N #LowerCase

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