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How can I check the integrity of a downloaded Ubuntu CD?

Where do I find instructions for making sure the Ubuntu ISO I download is correct?

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marked as duplicate by WarriorIng64, Ringtail, Scott Severance, Rinzwind, Stephen Myall Nov 9 '12 at 11:57

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You may download the ubuntu from www.ubuntu.com website. and Checksums are available at:

To generate checksums for you ubuntu iso, run md5sum [ubuntu-iso-name.iso] and match the resulting checksum with the one available at the website (the second link).

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MD5SUMs, SHA1SUMs and SHA256SUMs (all checksums) for all CD variants of the current release (Precise: Desktop, Server and Alternate) are also available directly at http://releases.ubuntu.com/precise:

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