Subversion has a nice way of including the content of one repository into another repository. This is useful e.g. when you have a repository with common routines that you want to use in multiple projects but you don’t want to duplicate the common code in multiple repositories (for obvious reasons).
svn:externals property you can tell subversion to fetch content
of external repository in a given directory. However, the documentation
svn:externals is weak so this post hopefully will save someone time
googling and figuring out how it works.
svn:externals property on an existing directory. The value of
this property is a list of directory/repository path values, separated
The best way to explain this is using an example. Usually you would use just one external repository, but I’ll use two in the example, just to show how to create a list.
Let’s assume that you have external subversion repositories
repo_one in directory
dir_of_repo_two. Create a text file with the value of
property. Each list item is in it’s own line, dir name is separated from
repo path by whitespace e.g.:
$ cat >svn_ext_val.txt dir_of_repo_one http://svn.my.com/path/to/repo_one dir_of_repo_two http://svn.my.com/path/to/repo_two
Now set the property on any directory already in subversion. In the example it’s the current directory:
svn propset svn:externals . -F svn_ext_val.txt
Now when you do
dir_of_repo_one will be created with the
dir_of_repo_two with the content of
Voila! Pretty simple but you wouldn’t know that just by reading the docs.
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