https://bioinformaticsonline.com/snippets/view/40357/find-and-replace-in-multifasta-or-fasta-header-with-perl-onliner? https://bioinformaticsonline.com/snippets/view/40357/find-and-replace-in-multifasta-or-fasta-header-with-perl-onliner Mon, 02 Dec 2019 20:45:42 -0600 https://bioinformaticsonline.com/snippets/view/40357/find-and-replace-in-multifasta-or-fasta-header-with-perl-onliner You have a fasta file and you want to replace: "|" You are told to replace that by "_" perl -i -p -e "s/\|/_/g" genome.fasta -i = inplace editing -p = loop over lines and print each line (after processing) -e = command line script]]> BioStar