http://www.genome.jp/kegg-bin/get_htext?hsa00001+3101


一级结构(6大类):
grep ^A dre00001.keg |les

二级结构(下面三种方法都行,54小类):
grep ^B dre00001.keg |awk ‘$0 != "B" {print}‘ |les
grep ^B dre00001.keg |grep -v ‘B$‘ |les
grep ^B dre00001.keg |sort -u |sed ‘1d‘ |les

三级结构(515 信号通路):
grep ^C dre00001.keg |les

四级结构(27101个基因):
grep ^D dre00001.keg |wc -l

原文:https://www.cnblogs.com/djx571/p/9636399.html