[root@Cobbler logs]# cat aa.txt
qqq123ppp123====123[root@Cobbler logs]# sed -i '2,5s#123#456#' aa.txt [root@Cobbler logs]# cat aa.txt qqq456ppp456====123本文共 218 字，大约阅读时间需要 1 分钟。
[root@Cobbler logs]# cat aa.txt
qqq123ppp123====123[root@Cobbler logs]# sed -i '2,5s#123#456#' aa.txt [root@Cobbler logs]# cat aa.txt qqq456ppp456====123转载于:https://www.cnblogs.com/gaoyuechen/p/7844169.html