Cannot get cmd command result from C# code

Question

I am using a switch and I want to connect it via ssh or telnet and send commands to specific ports. I succeeded connecting to the switch but I am not able to execute commands after login.

string command = "reboot";
using (Process process = new Process())
{
     process.StartInfo.FileName = "plink.exe";
     process.StartInfo.Arguments = "[email protected] -pw admin " + command;
     process.StartInfo.UseShellExecute = true;
     process.StartInfo.CreateNoWindow = false;
     process.Start();
}

Code given above logins to the switch interface but not execute the command. It hangs with switch# text.

I tried a couple of things from cmd and I am able to get command on the screen after login but now I cannot get the same result when I write same text in C# code.

plink.exe [email protected] -pw admin < D:\input.txt --> this works when executed from cmd not in C#.

using (Process process = new Process())
{
     process.StartInfo.FileName = "plink.exe";
     process.StartInfo.Arguments = "[email protected] -pw admin < D:\\input.txt";
     process.StartInfo.UseShellExecute = true;
     process.StartInfo.CreateNoWindow = false;
     process.Start();
}

What could be the reason? Thanks

No, I am sorry but I think this is not that easy. I am facing with that problem more than 1 day. — snvngrc, Mar 08 '18 at 14:08
The code you have is passing the arguments as "[email protected] -pw adminreboot". I don't think you want "adminreboot" all as one word do you? — juharr, Mar 08 '18 at 14:09
It is the command processor that implements the `<` operator. You must therefore start Cmd.exe instead. Use its -c option to pass the command line. Start with -k so you can see errors. — Hans Passant, Mar 08 '18 at 14:13
@snvngrc - Set the filename for process' StartInfo as `cmd`, and pass plink.exe in the Arguments. Check if that helps. — Am_I_Helpful, Mar 08 '18 at 14:13
Do not drive an external console application for implement SSH. Use a native .NET class instead! — Martin Prikryl, Mar 08 '18 at 14:16
@MartinPrikryl I tried SshClient already. But it also doesn't work. — snvngrc, Mar 08 '18 at 14:20
So ask a question about `SshClient`, instead of hacking with an external application. — Martin Prikryl, Mar 08 '18 at 14:22
@MartinPrikryl If SshClient didn't work already, why am I asking my question about it? — snvngrc, Mar 08 '18 at 14:49
You can do much more with `SshClient` than with Plink. In other words, there's nothing you can do with Plink, that you cannot do with `SshClient`. Just because you didn't manage to make `SshClient` work, does not mean that it cannot work. — Martin Prikryl, Mar 08 '18 at 14:52
It seems like you can manage easily. Then why don't you help me instead of writing unnecessary comments? — snvngrc, Mar 08 '18 at 14:56
I've linked a question with an answer to your question about plink. - If you want a help with `SshClient`, you have to ask a new question with a code that you have tried, and good description of problems that you face with it. — Martin Prikryl, Mar 08 '18 at 15:16

Cannot get cmd command result from C# code

0 Answers0