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GNU/Linux is a very stable operating system and system crashes are
virtually unknown. GNU/Linux, like Unix before it, is designed to be a
multi-user, shared system. Simply because one user of the system runs
an application that crashes, other users of the same system should not
be affected. Also, most GNU/Linux applications have been in open
development for many years with many developers working on and looking
over the code. Bugs of course are not unknown, but they are usually
quickly fixed within GNU/Linux, leading to a very reliable system.
A source-code analysis of the MySQL database, for example, conducted
in January 2005, revealed only a few bugs in this open source database
which drives many web sites, compared with the number found in
commercial code. The analysis was conducted by testing company
Coverity. Their analysis found an average of one bug in every 4,000
lines of code-this is at least four times better than is typical with
commercial software.
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