中国DOS联盟

一文本，有上万行，内容类似如下.

序号,机构号,金额,姓名,客户号,五级 1,5416,350000,熊清喜,48260000140870,次级 2,5416,50000,杨小平,48260000142862,次级 3,5416,4500,杨明成,48260000144168,次级 4,5417,7000,蒲猛,48260000144266,次级 5,5418,10000,杨小平,48260000142862,可疑 6,5417,5000,张瑞东,48260000145752,可疑 7,5417,500000,杨明成,48260000144168,可疑 8,5419,200000,张瑞东,48260000145752,损失 9,5417,25000,杨小平,48260000142862,正常 10,5417,15000,蒲猛,48260000144266,正常

我需要将同一客户号（第五列）的金额（第3列）相加，并插入到客户号列后。

处理后如下：
序号,机构号,金额,姓名,客户号,余额,五级 1,5416,350000,熊清喜,48260000140870,350000,次级 2,5416,50000,杨小平,48260000142862,85000,次级 3,5416,4500,杨明成,48260000144168,504500,次级 4,5417,7000,蒲猛,48260000144266,22000,次级 5,5418,10000,杨小平,48260000142862,85000,可疑 6,5417,5000,张瑞东,48260000145752,205000,可疑 7,5417,500000,杨明成,48260000144168,504500,可疑 8,5419,200000,张瑞东,48260000145752,205000,损失 9,5417,25000,杨小平,48260000142862,85000,正常 10,5417,15000,蒲猛,48260000144266,22000,正常

因为该文本较大（20M以上），要求用gawk或其它能快速处理文本的命令处理。
求高手相助。先谢了。

用excel就可以了吧。gawk就不知道怎么处理了。

BEGIN{ FS=",";OFS=","; while(getline<ARGV>0)arr+=$3; } { print$1,$2,$3,$4,$5,(NR>1?arr:"余额"),$6; }

[ Last edited by freeants001 on 2011-1-6 at 16:53 ]