basically like require('child_process').exec() so we don't have to do the exit code handling and buffering ourselves.

My ssh server runs on a non-std port....the opts object needs to pass on these settings to the ssh2 connect call.

If I get connection error i.e. ssh2 'USERAUTH_FAILURE ' how do I handle it, where to put err callback ?

I'm wondering how I could use this module for running a series of conditional ssh commands. For example:

var folder = "example";
exec('cd ' + folder, '[email protected]', function (err, stdout, stderr) {
  if(stdout.indexOf("No such file or directory") {
    exec("mkdir " + folder, '[email protected]', function (err, stdout, stderr) {

    });
  }
  exec("do something", "[email protected]", function (err,stdout,stderr) {

  });
})

Is this a valid approach? Is it necessary to provide the credentials for every command? Any suggestions?

let sshExec = require('ssh-exec')

sshExec('exit 1', 'user@example', (err, stdout, stderr) => {
  if (err) {
    console.log('error found')
    console.log(err)
  } else {
    console.log('error not found')
  }
})

Outputs error not found.

Can I stream a command? like tail -f file? I am trying to use this in a web application and I want to stream output of a command to the client? like this. How can I achieve this?

export function execute(req, res) {

  console.log("execute");
  console.log(req.body);
  var device = req.body;

  try{
    exec('tail -f file.txt', {
      user: device.username,
      host: device.ipaddress,
      password: device.password
    }).pipe(res);
  }
  catch(e){
    res.error(e)
  }

}

Hey, sorry maybe doing something wrong but can't find anything in the output file, see below:

var exec = require('ssh-exec');
var fs = require('fs');
file = fs.createWriteStream('rep-output.txt');
process.stdin
.pipe(exec(command, host))
.pipe(file);
file.end();

here it is:
$ cat rep-output.txt
$
but because 'command' is 'touch output.txt' I can see it executed correctly on remote 'host':
$ ls -l output.txt
-rw-rw-r-- 1 irekr irekr 0 Jul 4 10:53 output.txt

Hey, hopefully you can point me in the right direction.

I'm trying to install nvm via ssh-exec. When I log in directly, source ~/.profile works. However, when using ssh-exec it doesn't. I think it might have to do with the bash profile. Any idea?

For context: https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-ubuntu-16-04#how-to-install-using-nvm

Is it possible to do something like this:

exec.on('error' , function(err) {
  //do something
});

In the code I see that duplex emits an error event, how to catch it?

There are some great examples in issue 13 (and it would be useful if they were on the front page.)

But how do you run a sudo command? Can you redirect the ask for password prompt & keyboard input into the the remote server somehow?

When running this script (with a fresh install, [email protected]):

var sshExec = require('ssh-exec');

sshExec('ls -l', {
  host : 'xxx.xxx.xxx.xxx',
  user : 'root'
});

I get this exception from duplexify:

/home/unitech/gridcontrol/gridcontrol/grid-cli/node_modules/duplexify/index.js:161
  while ((data = this._readable2.read(state.buffer.length ? state.buffer[0].length : state.length)) !== null) {
                                                                           ^
TypeError: Cannot read property 'length' of undefined
    at Duplexify._forward (/home/unitech/gridcontrol/gridcontrol/grid-cli/node_modules/duplexify/index.js:161:76)
    at Channel.onreadable (/home/unitech/gridcontrol/gridcontrol/grid-cli/node_modules/duplexify/index.js:126:10)
    at emitNone (events.js:86:13)
    at Channel.emit (events.js:185:7)
    at emitReadable_ (_stream_readable.js:433:10)
    at emitReadable (_stream_readable.js:427:7)
    at readableAddChunk (_stream_readable.js:188:13)
    at Channel.Readable.push (_stream_readable.js:135:10)
    at SSH2Stream.<anonymous> (/home/unitech/gridcontrol/gridcontrol/grid-cli/node_modules/ssh2/lib/Channel.js:146:15)
    at emitOne (events.js:96:13)

There's a ) missing in some of your example code I believe:

process.stdin
    .pipe(exec('echo try typing something; cat -', '[email protected]')
    .pipe(process.stdout);

Should be:

process.stdin
    .pipe(exec('echo try typing something; cat -', '[email protected]')) // here
    .pipe(process.stdout);

Cheers,

Ewan

Hi,

I'm using this package within a Meteor JS application and it would be a great help if the exec() function could be passed a Callback.

Apologies if this is already possible, I didn't have any luck trying.

Going by your example, I tried doing

process.stdin
            .pipe(exec('echo try typing something; cat -', hostInstance))
            .pipe(process.stdout);

It connects, but when I run a command, nothing happens?

Cheers in advance!

Hey ! I want to know if there is a thing to do to use a proxy with this awesone plugin =D !

I think there is something to do with agents and thing like that but i'm not ultra-skilled 😁.
Thx.

exec('interface bridge vlan print terse ', m).pipe(process.stdout, function (err, data) {

})

I do an "cat xyz.json" but the stdout is not the full file content. It breaks after 16364 characters...

I use the callback method.

Any ideas why?

$ node -v
v8.9.1

exec('echo superman', '[email protected]', function (err, stdout, stderr) { console.log(err, stdout, stderr) })

Does not echo superman on Centos even with selinux disabled post restart :/
The command still runs, but the client doesn't see the output.

works fine on Debian

Strangely, a git pull does result in some output being send back. Very strange.

Getting a vulnerability from this package running npm audit, Could ssh-exec be updated to use a more recent version of ssh2?

Hi,

I was trying this package to execute command on remote linux server. It is working as per my expectations. All i want to know , how to stop the execution and disconnect ssh connection on demand. I am using below code to get the system stats.

var exec = require('ssh-exec') var v_host = 'XX.XX.XX.XXX' exec('vmstat 1 300', { user: 'root', host: 'XX.XX.XX.XXX', password: 'password' }).pipe(process.stdout , function (err, data) { if ( err ) { console.log(v_host); console.log(err); } console.log(data) })

Please suggest.

In your example

exec('ls -lh', {
  user: 'ubuntu',
  host: 'my-remote.com',
  key: myKeyFileOrBuffer,
  password: 'my-user-password'
}).pipe(process.stdout)

what type is myKeyFileOrBuffer? is it a path to the key file?