摘要：
1、The sed editor is called a stream editor,,主要是根据表达式表述的条件,搜索到指定的内容,可以对内容进行修改,替换和删除,但是只是在输出的时候修改,并不会修改输入的文件的内容。A stream editor edits a stream of data based on a set of rules you supply ahead of time。2、sed的操作流程如下： It reads one line of data at a time from the input and matches that data with the suppli 阅读全文
