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A file digest is just a quick way to check that a file is right.

On Windows, you can use Microsoft's FCIV program:

FCIV -md5 -sha1 <file name>

On Mac OSX and Linux, use openssl:

openssl dgst -md5 <file name>
openssl dgst -sha1 <file name>

Both programs are free.

Related Topics

• Why do I need to compare the MD5 and SHA1 file digests?

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