(Go) SSH Exec (Execute Command Line)

Shows how to execute a command on an SSH server and retrieve the command output.

Chilkat Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

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

    ssh := chilkat.NewSsh()

    // Connect to an SSH server:
    var hostname string
    var port int

    // Hostname may be an IP address or hostname:
    hostname = "192.168.1.108"
    port = 22

    success := ssh.Connect(hostname,port)
    if success != true {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    // Wait a max of 5 seconds when reading responses..
    ssh.SetIdleTimeoutMs(5000)

    // Authenticate using login/password:
    success = ssh.AuthenticatePw("myLogin","myPassword")
    if success != true {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    // Open a session channel.  (It is possible to have multiple
    // session channels open simultaneously.)
    var channelNum int
    channelNum = ssh.OpenSessionChannel()
    if channelNum < 0 {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    // The SendReqExec method starts a command on the remote
    // server.   The syntax of the command string depends on the
    // default shell used on the remote server to run the command.
    // On Windows systems it is CMD.EXE.  On UNIX/Linux
    // systems the user's default shell is typically defined in /etc/password.

    // Here are some examples of command lines for <b>Windows SSH servers</b>:

    // Get a directory listing:
    cmd1 := "dir"

    // Do a nameserver lookup:
    cmd2 := "nslookup chilkatsoft.com"

    // List a specific directory.  Given that the shell is CMD.EXE, backslashes must
    // be used:
    cmd3 := "dir \\temp"

    // Execute a sequence of commands.  The syntax for CMD.EXE may be found
    // here: http://technet.microsoft.com/en-us/library/bb490880.aspx.  Notice how the commands
    // are separated by "&&" and the entire command must be enclosed in quotes:
    cmd4 := "\"cd \\temp&&dir\""

    // Here are two examples of command lines for <b>Linux/UNIX SSH servers</b>:

    // Get a directory listing:
    cmd5 := "ls -l /tmp"

    // Run a series of commands (syntax may depend on your default shell):
    cmd6 := "cd /etc; ls -la"

    // Request a directory listing on the remote server:
    // If your server is Windows, change the string from "ls" to "dir"
    success = ssh.SendReqExec(channelNum,"ls")
    if success != true {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    // Call ChannelReceiveToClose to read 
    // output until the server's corresponding "channel close" is received.
    success = ssh.ChannelReceiveToClose(channelNum)
    if success != true {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    // Let's pickup the accumulated output of the command:
    cmdOutput := ssh.GetReceivedText(channelNum,"ansi")
    if ssh.LastMethodSuccess() != true {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    // Display the remote shell's command output:
    fmt.Println(*cmdOutput)

    // Disconnect
    ssh.Disconnect()

    ssh.DisposeSsh()