sed用法
时间：2005-08-04 来源：qsxing
sed 用法
sed 's/%//g' 把%换成空格
sed 's/^0*//g' 把以0开头的数字换成空格
sed /^$/d 删除空行
sed $d 删除最后一行
sed ld 删除第一行
sed 's/[0-9][0-9]*/& password/g' file.txt 把password连接到后面
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