示例：sed -i "s/shan/hua/g" lishan.txt 把当前目录下lishan.txt里的shan都替换为hua 相关文章： 2021-12-31 2021-12-31 2021-08-09 2021-05-15 2022-01-11 2022-12-23 2022-12-23 2022-12-23