mon-service ubuntu守护程序服务启动失败

Question

我在ubuntu 12.04 LTS上用FileSystemWatcher编写了一个使用mono develop的服务。该服务正常运行，但是当我尝试使用脚本作为ubuntu守护程序运行它时，我的日志文件显示该服务正在运行，但FileSystemWatcher没有引发事件，尽管我通过双击运行脚本然后服务运行正常。
这是我的OnStart方法：

[PermissionSet(SecurityAction.Demand, Name="FullTrust")]            
protected override void OnStart (string[] args)
{
    try
    {               
        WriteLog("dir Srvc On Start");
        string d = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
        watcher = new FileSystemWatcher ();
        watcher.Path = d;
        watcher.NotifyFilter = 
            NotifyFilters.DirectoryName | NotifyFilters.FileName |
            NotifyFilters.LastAccess | NotifyFilters.LastWrite;
        watcher.IncludeSubdirectories = false;
        watcher.Filter = "*.txt";
        watcher.Created += new FileSystemEventHandler(OnCreated);    
        watcher.Error += new ErrorEventHandler (OnError);    
        watcher.EnableRaisingEvents = true;
    }
    catch(Exception ex)
    {
        WriteLog("On Startup Exeption: "+ex.ToString());
    }
}

这是我的OnCreated Methhod：

[PermissionSet(SecurityAction.Demand, Name="FullTrust")]
private void OnCreated(Object O, FileSystemEventArgs e)
{
    try
    {
        WriteLog(e.FullPath.ToString() + " " + e.Name.ToString() + " " 
                 + e.ChangeType.ToString());    
        string outputdir = "OutPut";
       string d = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
            string outdir = Path.Combine(d,outputdir);
        Directory.CreateDirectory (outdir);
        string outputfile = Path.Combine (outdir,e.Name);   
        File.Move(e.FullPath,outputfile);
    }
    catch(Exception ex)
    {
        WriteLog("On Created Exeption: "+ex.ToString());
    }       
}

我在rc2.d目录下的可执行脚本：

#!/bin/sh    
mono-service -l:/dir/forlock/service.lock  /dir/forsrvc/dirWatchSrvc.exe

我也是ubuntu的新手，对其中的脚本知之甚少。

更新

我更新了代码，但仍无法正常工作