@ECHO OFF
REM script dumps specific project by getting it from the repository 

IF "%1"=="" (
	ECHO "Usage: %0 project" 
	GOTO END
)
svn list file:///%cd:\=/%/ | grep ^%1/ > tmp.file
set /p grepResult=<tmp.file
del tmp.file
IF "%grepResult%"=="" (
	ECHO There is no '%1' project in the current repository
	GOTO END
)
svnadmin dump . > repo.dump
svndumpfilter include %1/ < repo.dump > %1.dump
ECHO Project '%1' has been successfully dumped to file %1.dump
:END

Batch script creates repository dump of specific project in repository. It assumes that repository has following structure:

    /project1
        /trunk
        /tags
        /branches

    /project2
        /trunk
        /tags
        /branches
    ...
    /projectN
        /trunk
        /tags
        /branches

Needs UnxUtils installed to be executed successfully(http://unxutils.sourceforge.net/)

Create svn repository dump

svn, windows

DOS Batch