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Iso´S And Md5sum ( Checksum )

Added on:8/30/2008 1:04:12 AM
In Linux Tips
 Rated by 1 users

    For those of you that never came near to linux, here is a description how to download your first Linux ISO, and check its integrety.
  1. For the ones already running Linux: Imagine, one day you get bored with your current distro and you want to try something else. Or, you´ve got enough HD space and want to triple-boot. Or, and this is more likely to happen; there is a new version of your disto hitting the mirrors : You start downloading the ISO´s.

  2. After downloading you can check the integrity of the ISO-file with a checksum, the md5sum. The mirror will offer you a separate text file to download with a 128 bit string of characters. This string has to be exactly the same as the one you get when you do:

  3. CODE
    $ md5sum downloaded.iso

  4. The string you get typically looks like:
    QUOTE (Text @ Screen)
    563c1bfff307a16d45f5d6 a04011f07b
    ( Sure you have to ¨cd¨ to that directory first or do /home/bruno/tmp/downloaded.iso )

  5. Creating the checksum will take only a minute.
    Usually I only check the first and the last 5 or 6 characters of the string.


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