SVN: delete all .svn (recursively)

Windows:
FOR /F "tokens=*" %G IN ('DIR /B /AD /S *.svn*') DO RMDIR /S /Q "%G"

Linux:
find . -type d -name '.svn' -print -exec rm -rf {} \;

svn error "svn: Your .svn/tmp directory may be missing or corrupt; run 'svn cleanup' and try again"

$ svn cleanup 
svn: Your .svn/tmp directory may be missing or corrupt; run 'svn cleanup' and try again
svn: Can't open file '.svn/tmp/entries': No such file or directory
$ touch .svn/tmp/entries
$ svn cleanup 
$