Rust (ssh2(libssh2))

use ssh2::Session;
use std::io::Read;
use std::net::TcpStream;

fn main() {
    let username = "user";
    let password = "pass";
    let server = "server:22";

    let tcp = TcpStream::connect(server).expect("Failed to connect to server");
    let mut sess = Session::new().expect("Failed to create session");
    sess.set_tcp_stream(tcp);
    sess.handshake().expect("Failed to handshake");

    sess.userauth_password(username, password).expect("Failed to authenticate");
    assert!(sess.authenticated());

    let run_command = |cmd: &str| {
        let mut channel = sess.channel_session().expect("Failed to create channel");
        channel.exec(cmd).expect("Failed to execute command");
        let mut output = String::new();
        channel.read_to_string(&mut output).expect("Failed to read output");
        println!("Output: {}", output);
        channel.wait_close().expect("Failed to close channel");
    };
    run_command("date +\"%T.%N\"");
    run_command("date +\"%T.%N\"");
}