输入文件:
9842,5,a1,100000
9844,5,a1,100000
9845,5,a2,100000
9846,1,a2,100000
注意:
输出格式应为:
9842,5,a1,100000,10
9844,5,a1,100000,10
9845,5,a2,100000,6
9846,1,a2,100000,6
答案 0 :(得分:0)
$ awk -F"," 'FNR==NR{a[$3]+=$2;next}{print $0,a[$3]}' OFS="," file file
9842,5,a1,100000,10
9844,5,a1,100000,10
9845,5,a2,100000,6
9846,1,a2,100000,6