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= Daya-Bay Auxiliary Resources Repository =

This is the '''dybaux''' Trac instance providing a web interface to the SVN repository : 
  * http://dayabay.ihep.ac.cn/svn/dybaux


See [dybsvn:wiki:WikiStart] for login instructions

== Guidelines for where to keep things ==


  || project source code / scripts    ||  dybsvn:/       || 
  || personal source code / scripts   ||  dybsvn:/people ||
  || calibration data                 ||  [source:/ dybaux:/] ||  
  || binary image/video files         ||  ||

  
=== Derived files ===

Note that '''derived''' files do not belong in repositories, instead keep the source code
that you used to create the derived files in the repository.    

=== Binary files in SVN repositories ===

Subversion repositories are most useful for : '''source code''' , although binary files
can be stored in them, most of the benefits that subversion provides are irrelevant for binary files.
This is because source code repository operation is based on the differences between files, for 
binary files the difference is not meaningful.

  * '''subversion is simply the wrong tool for managing binary files.'''


== THINK before you commit ==

Once a file is committed to a subversion repository, it cannot be removed (without lengthy and painful efforts
involving dumping the entire history of the repository into a file , and then replaying the entire 
history of the repository commit-by-commit to create a new one). 



=== Where to put binary/video files ? ===

 * wiki attachment 
 * elog attachment  
 * ''free'' web services : picasa / flickr / youtube / ... ?