Recently it came to ubuntu12.04 lts release, so I was anxious to download a new version. But in the process, and the vast number of Linux enthusiasts have a lot of communication. and realize that, in fact, before making ubuntu12.04 discs need to do the MD5 value of the checksum. Later, further query data found that MD5 value incredibly is from the well-known hash algorithm, haha, really unexpected harvest ah.
Of course, from a practical point of view, or first introduce the ubuntu12.04 check MD5 value:
1 ubuntu12.04 with the MD5 verification tool, so we do not have to download;
2 sudo md5sum *.iso, I check the file directory, of course, write the directory of the file should also be able to
3 compared with the official md5sum file. Here, to provide you with two domestic sources. In these open source mirrors (source), you can find the official md5sum value.
One is the source of China University of Science and Technology, education network download speed quickly, I in the peak time Test 1.4M, url http://lug.ustc.edu.cn/wiki/server/mirrors/start;
Another is the source of NetEase, also logged in, very good. URL: http://mirrors.163.com/
4 If the same, OK. can be burned.
Above is the verification method in the Linux environment. Of course, Windows can also be verified.
The tool is hash (looks like a hash of transliteration) This software, now about 1.0.4 version, the method is very simple, do not say more.