KEGG-KO-htext-file-parser The Rscript to parse KEGG-KO htext file download KEGG-KO htext file Visit KEGG-KO htext website, KEGG Orthology (KO), click "Download json" to download json file. use the Rscript to prase Rscript kegg_ko_htext_json_parse.R -i ko00001.json