for i in `ls -1 /Volumes/data2/svn/repos`;
        if[! -d /Volumes/data2/svn/backup/$i]
                mkdir /Volumes/data2/svn/backup/$i;
                mkdir /Volumes/data2/svn/backup/$i/full;
        fi
        ./svn-backup-dumps.py /Volumes/data2/svn/repos/$i /Volumes/data2/svn/backup/$i/full
done;


RESULTS:

./svn-backup.sh: line 6: syntax error near unexpected token `if[! -d /Volumes/data2/svn/backup/$i]'
./svn-backup.sh: line 6: `      if[! -d /Volumes/data2/svn/backup/$i] '