C#实现远程ssh在linux执行命令后读取较多的输出内容，并检测输出结果和是否存在"发布成功"字段并返回

在C#中，使用SSH.NET库可以方便地执行远程Linux服务器上的命令，并读取大量输出。下面是一个示例，它展示了如何执行命令、捕获输出并检查结果是否存在特定字符串“发布成功”：

首先，需要安装SSH.NET库，通过NuGet包管理器添加引用：`Install-Package SSH.NET`

using SSH.NET;

public class RemoteExecutionService
{
    private readonly string _host;
    private readonly int _port;
    private readonly string _username;
    private readonly string _password;

    public RemoteExecutionService(string host, int port, string username, string password)
    {
        _host = host;
        _port = port;
        _username = username;
        _password = password;
    }

    public async Task<(bool success, string output)> ExecuteAndCheckStatusAsync(string command, string expectedSuccessMessage)
    {
        try
        {
            using var client = new SSHClient(_host, _port);
            await client.ConnectAsync();

            using (var sftp = await client.CreateSftpSessionAsync())
            {
                using (var session = await sftp.OpenShellAsync())
                {
                    using (var streamReader = new StreamReader(await session.ExecCommandAsync(command)))
                    {
                        string output = await streamReader.ReadToEndAsync(); // 读取所有输出
                        if (output.Contains(expectedSuccessMessage))
                        {
                            return (true, output);
                        }
                        else
                        {
                            return (false, "未找到 '发布成功' 字符串，输出为：" + output);
                        }
                    }
                }
            }
        }
        catch (Exception ex)
        {
            return (false, $"执行命令失败: {ex.Message}");
        }
        finally
        {
            await client.DisconnectAsync();
        }
    }
}

现在，你可以像这样使用这个服务：

string remoteHost = "your_host";
int remotePort = your_port;
string remoteUser = "your_user";
string remotePass = "your_password";

RemoteExecutionService service = new RemoteExecutionService(remoteHost, remotePort, remoteUser, remotePass);

(async () =>
{
    (bool result, string output) executionResult = await service.ExecuteAndCheckStatusAsync("your_long_running_command", "发布成功");
    Console.WriteLine($"执行状态: {result}, 输出: {output}");
})();