Pascal (Lazarus/Delphi)

SSH Execute Remote Commands

See more SSH Examples

Shows how to execute a command on an SSH server and retrieve the command output. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Ssh;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  ssh: TSsh;
  port: Integer;
  strOutput: string;

begin
  success := False;

  //  This example requires the Chilkat API to have been previously unlocked.
  //  See Global Unlock Sample for sample code.

  ssh := TSsh.Create;

  port := 22;
  success := ssh.Connect('the-ssh-server.com',port);
  if (success <> True) then
    begin
      WriteLn(ssh.LastErrorText);
      Exit;
    end;

  //  Authenticate using login/password:
  success := ssh.AuthenticatePw('theSshLogin','theSshPassword');
  if (success <> True) then
    begin
      WriteLn(ssh.LastErrorText);
      Exit;
    end;

  //  Send some commands and get the output.
  strOutput := ssh.QuickCommand('df','ansi');
  if (ssh.LastMethodSuccess <> True) then
    begin
      WriteLn(ssh.LastErrorText);
      Exit;
    end;
  WriteLn('---- df ----');
  WriteLn(strOutput);

  strOutput := ssh.QuickCommand('echo hello world','ansi');
  if (ssh.LastMethodSuccess <> True) then
    begin
      WriteLn(ssh.LastErrorText);
      Exit;
    end;
  WriteLn('---- echo hello world ----');
  WriteLn(strOutput);

  strOutput := ssh.QuickCommand('date','ansi');
  if (ssh.LastMethodSuccess <> True) then
    begin
      WriteLn(ssh.LastErrorText);
      Exit;
    end;
  WriteLn('---- date ----');
  WriteLn(strOutput);

  //  --------------
  //  Sample output:

  //  	---- df ----
  //  	Filesystem    512-blocks      Used  Available Capacity  iused     ifree %iused  Mounted on
  //  	/dev/disk2    2176716032 265736304 1910467728    13% 33281036 238808466   12%   /
  //  	devfs                382       382          0   100%      662         0  100%   /dev
  //  	map -hosts             0         0          0   100%        0         0  100%   /net
  //  	map auto_home          0         0          0   100%        0         0  100%   /home
  //  	/dev/disk3s2      374668    374668          0   100%    93665         0  100%   /Volumes/Google Chrome
  //  
  //  	---- echo hello world ----
  //  	hello world
  //  
  //  	---- date ----
  //  	Thu Dec 22 17:19:32 CST 2016


  ssh.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.