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ssh2

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ssh2

SSH2 client and server modules written in pure JavaScript for node.js

  • 1.16.0
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  • npm
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What is ssh2?

The ssh2 npm package is a client and server module for SSH and SFTP written in pure JavaScript for node.js. It provides an interface to connect to and interact with SSH servers, allowing for the execution of commands, file transfers, local and remote port forwarding, and more.

What are ssh2's main functionalities?

Executing Commands on Remote Server

This code sample demonstrates how to execute a command (in this case, 'uptime') on a remote server using the ssh2 package.

const { Client } = require('ssh2');

const conn = new Client();
conn.on('ready', () => {
  console.log('Client :: ready');
  conn.exec('uptime', (err, stream) => {
    if (err) throw err;
    stream.on('close', (code, signal) => {
      console.log('Stream :: close :: code: ' + code + ', signal: ' + signal);
      conn.end();
    }).on('data', (data) => {
      console.log('STDOUT: ' + data);
    }).stderr.on('data', (data) => {
      console.log('STDERR: ' + data);
    });
  });
}).connect({
  host: '192.168.100.100',
  port: 22,
  username: 'frylock',
  privateKey: require('fs').readFileSync('/here/is/my/key')
});

SFTP File Transfer

This code sample shows how to transfer a file from a local path to a remote path using SFTP with the ssh2 package.

const { Client } = require('ssh2');

const conn = new Client();
conn.on('ready', () => {
  console.log('Client :: ready');
  conn.sftp((err, sftp) => {
    if (err) throw err;
    sftp.fastPut(localPath, remotePath, {}, (err) => {
      if (err) throw err;
      console.log('File transferred successfully!');
      conn.end();
    });
  });
}).connect({
  host: '192.168.100.100',
  port: 22,
  username: 'frylock',
  privateKey: require('fs').readFileSync('/here/is/my/key')
});

TCP Port Forwarding

This code sample illustrates how to set up TCP port forwarding from the local machine to a remote destination using the ssh2 package.

const { Client } = require('ssh2');

const conn = new Client();
conn.on('ready', () => {
  console.log('Client :: ready');
  conn.forwardOut('127.0.0.1', 12345, 'www.google.com', 80, (err, stream) => {
    if (err) throw err;
    stream.on('close', () => {
      console.log('TCP :: CLOSED');
      conn.end();
    }).on('data', (data) => {
      console.log('TCP :: DATA: ' + data);
    });
    stream.end('GET / HTTP/1.1\r\nHost: www.google.com\r\nConnection: close\r\n\r\n');
  });
}).connect({
  host: '192.168.100.100',
  port: 22,
  username: 'frylock',
  privateKey: require('fs').readFileSync('/here/is/my/key')
});

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Package last updated on 16 Sep 2024

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