What is 'md5sum'?

An 'md5sum' is a cryptographically generated hash -- essentially a 'checksum' -- of a file.

I have provided an md5 hash of all the ZIP files I make available for download on this site. For every link to a ZIP file, you should find a corresponding [md5] link. You can use this file to verify that the ZIP file has not been corrupted or modified.

Example

To verify filename.zip with md5sum, place the ZIP file and the corresponding MD5 file in the same directory. Type:

  md5sum -c filename.md5

If all is well, you should see:

  filename.zip: OK

If the ZIP file has been altered (or corrupted) you will see this instead:

  filename.zip: FAILED
  md5sum: WARNING: 1 of 1 computed checksum did NOT match

Try downloading the ZIP file again; if the problem persists, please notify me.