Full and incremental dump of a Subversion repository from a Windows BAT file

Johan Känngård — Fri, 23 May 2008 13:47:43 +0000

The first is something you should do weekly on your Subversion repository – a full dump. Put the following in a BAT or CMD file on a Windows box, and run it scheduled.

@echo off REM Creates a full dump of the repository, should be run weekly


for /f \"tokens=1-4 delims=- \" %%a in (\'date /T\') do set year=%%a

for /f \"tokens=1-4 delims=- \" %%a in (\'date /T\') do set month=%%b

for /f \"tokens=1-4 delims=- \" %%a in (\'date /T\') do set day=%%c

for /f \"tokens=1-2 delims=: \" %%a in (\'time /T\') do set hour=%%a

for /f \"tokens=1-2 delims=: \" %%a in (\'time /T\') do set minute=%%b

set TODAY=%year%%month%%day%

set NOW=%hour%%minute%

for /F \"tokens=1 \" %%i IN (\'svnlook youngest c:\\repository\') do call set YOUNGEST=%%i echo %YOUNGEST% > c:\\backup\\repository\\latestRev.dat svnadmin dump c:\\repository > c:\\backup\\repository\\svndump_full_rev%YOUNGEST%.%TODAY%%NOW%
The above example makes a dump to c:\backup\repository of your repository at c:\repository named with the most recent revision and todays date and time.
The example below creates incremental dumps using the latestRev.dat file to store the latest revision that was dumped.
@echo off REM Creates a partial dump with all revisions since last full dump, should be run daily


	for /f \"tokens=1-4 delims=- \" %%a in (\'date /T\') do set year=%%a

	for /f \"tokens=1-4 delims=- \" %%a in (\'date /T\') do set month=%%b

	for /f \"tokens=1-4 delims=- \" %%a in (\'date /T\') do set day=%%c

	for /f \"tokens=1-2 delims=: \" %%a in (\'time /T\') do set hour=%%a

	for /f \"tokens=1-2 delims=: \" %%a in (\'time /T\') do set minute=%%b

	set TODAY=%year%%month%%day%

	set NOW=%hour%%minute%
	for /F \"tokens=1 \" %%i in (\'svnlook youngest c:\\repository\') do call set YOUNGEST=%%i

	set PREVIOUS=0

	if not exist c:\\backup\\repository\\latestRev.dat goto nolatestrev
	for /F \"tokens=1 \" %%i in (c:\\backup\\repository\\latestRev.dat) do call set PREVIOUS=%%i
:nolatestrev:

	if %YOUNGEST% == %PREVIOUS% goto noupdate
	echo %YOUNGEST% > c:\\backup\\repository\\latestRev.dat
	svnadmin dump -r %PREVIOUS%:%YOUNGEST% c:\\repository > c:\\backup\\repository\\svndump_incremental_rev%PREVIOUS%to%YOUNGEST%.%TODAY%%NOW%

	goto finally

:noupdate echo No dump needed :finally
I’m no Windows batch file pro, but I got this working anyway with some help from Google.

Johan Känngård » Subversion

Full and incremental dump of a Subversion repository from a Windows BAT file