【摘要】ddsdf在Linux上可以利用`md5sum`、`sha1sum`、`sha256sum`命令计算文件hash值。在Windows上同样有指令可以计算：```certutil -hashfile filename MD5certutil -hashfile filename SHA1certutil -hashfile filename SHA256```

certutil -hashfile filename MD5
certutil -hashfile filename SHA1
certutil -hashfile filename SHA256