从 .net-core 工具中取消子进程

Question

I have a tool which runs a ssh command so I can connect to the linux pc via reverse ssh. When I want to update my tool, written in .Net Core 2.1 , the updater will stop the process of the tool and update the files. But by stopping the tool the ssh process, started before with Process.Start() , will be closed, too, as the ssh process is a child process from the tool.

Is there any way to "disown" the child ssh process from my tool so I wont loose connection while the updater runs?

Running Ubuntu...

C#:

case UssGatewayFunction.NPIConnectSSH:
    Log.Information("Connect to MyCompany via ssh");
    try
    {
        Process.Start("ssh", "-R 3521:localhost:22 -p 9450 myuser@1.2.3.4 sleep 30");
        response = new DefaultRes(true, UssGatewayFunction.NPIConnectSSH);
    }
    catch (Exception ex)
    {
        Log.Error($"Can't start ssh: {ex.Message}");
        response = new DefaultRes(false, UssGatewayFunction.NPIConnectSSH);
    }

Updater.sh:

systemctl stop gateway.service
if pgrep "gateway" >/dev/null 2>&1 ; then
        #here i loose the ssh connection
        pkill -x "init-gateway" || true
        pkill -x "gateway" || true
fi
#now just the extracting happens

Answer 1

What worked for me:

 [DllImport("libc")]
 private static extern int system(string exec);
 
 system($"nohup {command} >/dev/null 2>&1 &");

Infos : system , nohup