Start a Remote Shell with QuickShell

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Demonstrates the Chilkat Ssh.QuickShell method, which starts a remote shell using the simplified sequence OpenSessionChannel → SendReqPty → SendReqShell. It takes no arguments and returns the shell channel number, or -1 on failure. The default PTY size is 80 columns by 24 rows.

    success := false

    //  Demonstrates the Ssh.QuickShell method, which starts a remote shell using the simplified
    //  sequence OpenSessionChannel, SendReqPty, and SendReqShell.  It takes no arguments and returns
    //  the shell channel number, or -1 on failure.  The default PTY size is 80 columns by 24 rows.

    ssh := chilkat.NewSsh()

    sshPort := 22
    success = ssh.Connect("ssh.example.com",sshPort)
    if success == false {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    //  Normally you would not hard-code the password in source.  You should instead obtain it
    //  from an interactive prompt, environment variable, or a secrets vault.
    password := "mySshPassword"

    success = ssh.AuthenticatePw("mySshLogin",password)
    if success == false {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    //  Start the shell.  Note that QuickShell allocates a PTY, so the remote shell runs
    //  interactively: it prints a command prompt and echoes the commands that are sent to it.
    channelNum := ssh.QuickShell()
    if channelNum < 0 {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    //  QuickShell returns as soon as the shell request is accepted -- it does not wait for or
    //  consume the initial login text or prompt.
    success = ssh.ChannelSendString(channelNum,"uname -a; echo DONE_MARKER\n","utf-8")
    if success == false {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    //  IMPORTANT: Set a read timeout before receiving until a match.  ReadTimeoutMs defaults to 0,
    //  which means no limit -- without it, this call waits forever if the received data never
    //  contains a match.
    ssh.SetReadTimeoutMs(15000)

    caseSensitive := false
    success = ssh.ChannelReceiveUntilMatch(channelNum,"DONE_MARKER","utf-8",caseSensitive)
    if success == false {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    output := ssh.GetReceivedText(channelNum,"utf-8")
    if ssh.LastMethodSuccess() == false {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    fmt.Println(*output)

    ssh.Disconnect()

    ssh.DisposeSsh()