Putty - Delete files dynamically using C#

Question

I am working on a Windows app with C# as a programming langugage.

Requirement is

1. to login to putty dynamically
2. delete old files from specific loca

Answer 1

Putty has the command line option -m {script_file} which allows you to specify a script file to be run against the remote server. After all the commands are run, putty will exit.

You could save the command to be run in a script file, call Putty, and delete the script file when you're done.

The following code works for me:

string hostname = "hostname";
string login = "login";
string password = "password";
string command = "rm ~/dir1/dir2/NewFolder/*.txt"; // modify this to suit your needs

const string scriptFileName = @"remote_commands.sh";
File.WriteAllText(scriptFileName, command);

var startInfo = new ProcessStartInfo();
startInfo.FileName = @"C:\Putty\putty.exe";
startInfo.Arguments = string.Format("{0}@{1} -pw {2} -m {3}", 
                                     login, hostname, password, scriptFileName);

var process = new Process {StartInfo = startInfo};
process.Start();
process.WaitForExit();

File.Delete(scriptFileName);

If all you want to do is send a single command to the server, this solution will do. If you need more advanced functionality, like reading the server response, you should check out Thomas' answer.

Edit:

Here's how to use plink to run commands and get their output:

string hostname = "hostname";
string login = "login";
string password = "password";

var startInfo = new ProcessStartInfo();
startInfo.FileName = @"C:\Putty\plink.exe";
startInfo.RedirectStandardInput = true;
startInfo.RedirectStandardOutput = true;
startInfo.UseShellExecute = false;
startInfo.Arguments = string.Format("{0}@{1} -pw {2}",
                                        login, hostname, password);

using (var process = new Process {StartInfo = startInfo})
{
    process.Start();

    process.StandardInput.WriteLine("ls");
    process.StandardInput.WriteLine("echo 'run more commands here...'");
    process.StandardInput.WriteLine("exit"); // make sure we exit at the end

    string output = process.StandardOutput.ReadToEnd();
    Console.WriteLine(output);
}