bash之文件排序得到分类汇总
cat 2 |sort -k 2n -u|sort -r|awk 'BEGIN{t=0;t1=0;} {if(t!=$1) {t=$1;t1=$2;print t,t1;}}'
cat 2 |sort -k 2n -u|sort -r|awk 'BEGIN{t=0;t1=0;} {if(t!=$1) {t=$1;t1=$2;print t,t1;}}'
