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# **md5sum**
## 说明
**md5sum命令** 采用MD5报文摘要算法（ ）
MD5算法常常被用来验证网络文件传输的完整性， （ ） ，
信息逐位进行计算， （ ） （ ） ，
## 选项
```markdown
-b, --binary 以二进制模式读取
-c, --check 从文件中读取MD5 的校验值并予以检查
--tag create a BSD-style checksum
-t, --text 以纯文本模式读取(默认)[注意：
以下四个选项对于验证校验和非常有用
--quiet don't print OK for each successfully verified file
--status don't output anything, status code shows success
--strict exit non-zero for improperly formatted checksum lines
-w, --warn warn about improperly formatted checksum lines
```
## 实例
```bash
# 生成一个文件insert.sql的md5值
md5sum file -c file.md # 检查file是否被修改，
```
