我知道这个问题已经问过很多次了，但我相信我的情况是不同的。

我试图在SVN存储库中添加一个修改前更改挂钩，以使更改能够记录消息。

在添加 pre-revprop-change 文件之前，我收到了以下错误：

$ svn propset -r 557 --revprop svn:log "New message!" https://myserver/repos/myrepo
svn: DAV request failed; it's possible that the repository's pre-revprop-change hook either failed or is non-existent
svn: At least one property change failed; repository is unchanged
svn: Error setting property 'log': 
Repository has not been enabled to accept revision propchanges;
ask the administrator to create a pre-revprop-change hook

没问题，我想。我再加一句：

$ cd /var/www/svn/myrepo/hooks
$ # Create the simplest hook possible
$ echo '#!/bin/sh' > pre-revprop-change
$ echo 'exit 0' >> pre-revprop-change
$ # Check that it looks correct
$ cat pre-revprop-change
#!/bin/sh
exit 0
$ # Looks good, now make it executable
$ chmod a+x pre-revprop-change
$ # Check the permissions
$ ls -al pre-revprop-change
-rwxr-xr-x 1 apache apache 17 2012-05-24 12:05 pre-revprop-change
$ # Run it, to make sure it runs, and check the error code
$ ./pre-revprop-change 
$ echo $?