How To Check MD5 Checksum of a File

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 4 - 8
  • Microsoft Windows (optional)

Issue

  • How do I verify the integrity of a file with md5sum?

Resolution

  • To print the md5 checksum to the console.

    $ md5sum filetocheck

  • Verify that the alpah-numeric string that was printed to the console matches the md5 hash that was provided with the file.

  • To verify md5 checksum from a file.

    $ md5sum -c hash.md5

  • The program will print the filename and OK if verified to the console. The file format should be a hash(two spaces)filename.

    $ cat hash.md5
a84d4d9eddb36fb417832166cd10a4c2  rhel-server-6.5-x86_64-dvd.iso
...
004a37b1b0269992a3b341b8f7c3a579  boot.iso

Red Hat Enterprise Linux 9 and above

Windows

  • To check an md5sum on a Windows machine, you can use the certutil program as follows:

    First press Win+R and run "cmd", then:

    certutil -hashfile filetocheck MD5

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