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2009

HowToMD5SUM - Community Ubuntu Documentation

* HowToMD5SUM Contents 1. md5sum 2. MD5SUM on Linux 1. Check the iso file 2. Check the CD 3. MD5SUM on Mac OS X 4. digest(1) on Solaris 5. MD5SUM on Windows 6. MD5SUM on CD 7. MD5SUM of burnt media 8. External Links The program md5sum is designed to verify data integrity using the MD5 (Message-Digest algorithm 5) 128-bit cryptographic hash. MD5 hashes used properly can confirm both file integrity and authenticity. In terms of integrity, an MD5 hash comparison detects changes in files that would cause errors. The possibility of changes (errors) is proportional to the size of the file; the possibility of errors increase as the file becomes larger. It is a very good idea to run an MD5 hash comparison check when you have a file like an operating system install CD that has to be 100% correct. In terms of security, cryptographic hashes such as MD5 allow for authentication of data obtained from insecure mirrors. The MD5 hash must be signed or come from a secure source (an HTTPS page) of an organization you trust. See the MD5SUMS file for the release you're using under http://releases.ubuntu.com (and optionally the PGP signatures in the MD5SUMS.gpg file), or refer to the secure UbuntuHashes page for the official list of Ubuntu MD5 hashes. While security flaws in the MD5 algorithm have been uncovered, MD5 hashes are still useful when you trust the organization that produces them. Moving to more secure hashes like SHA-256 and Whirlpool is under discussion.

2008

Index:TIP - Gentoo Linux Wiki

(via)
Index:TIP From Gentoo Linux Wiki Jump to: navigation, search Tips are relatively small articles that do not provide a complete walkthrough (as HOWTOs should)

Turn a digital photo into Polaroid with GIMP

Related Content: * Graphics Tutorials * Fedora stuff and artwork * OpenOffice.org stuff and artwork * Clipart * Playing Cards * Cartoons * People Faces * Pin-ups

2007

DialupModemHowto

This page is designed to help you set up the driver, and configure your dial-up connection over a modem. If you need information about modems, see Modems. If you need to buy a new modem, see the appropriate section at Discussion.

scratch mit howto

Getting Started A step-by-step guide to getting started with Scratch. FAQ Look for answers to Frequently Asked Questions. Video tutorials Mini-movies showing what you can do with Scratch. Reference guide Overview of the Scratch interface and programming language. Scratch cards Print out cards with new Scratch tricks. Help screens Find out how to use each block. Scratch Board Connect real-world sensors to your Scratch projects

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