启动命令：
svnserve -d -r /svn/ --config-file /svn/conf/svnserve.conf --log-file /var/log/svn/svn.log --pid-file /var/run/svn/svn.pid --listen-port 3690
配置：
/svn/conf/svnserve.conf：
anon-access = none
auth-access = read
password-db = /svn/conf/passwd
authz-db = /svn/conf/authz
/svn/conf/authz:
svn_group = admin
[/]
@svn_group = r
/svn/conf/passwd:
admin = 123456
