node-ssh | A hookable ssh server for node.js using libssh | SSH library

Thanks to ROOT

Add the node path while running the node file. The response of which node will be add to run the node file.

Use Gradle wrapper and the Gradle Plugin for Node.

To avoid having to install gradle, I use Spring Initializr to create a simple project that has the gradle wrapper in it. Then I'll just copy the gradle folder, the gradlew and gradlew.bat. All that's left then is to create the .gitignore and build.gradle files.

I have figure out the problem: https://www.digitalocean.com/community/questions/node-v-and-nodejs-v-different-output

It can be solved by installing node.js from official Ubuntu packages not via NVM. https://github.com/nodesource/distributions#debinstall

The problem was really the key of the host, not the generated keys.

But the "clean" method doesn't work :

Regarding your first attempt (with the ssh2 module), there are three issues that I can see:

1. You are calling conn.end() outside of a series of preceding async functions, which is almost definitely causing the SSH session to close before you've finished downloading the files.
2. You are not providing the sftp.fastGet() function with the correct path to the remote file. Earlier in the code, you call sftp.readdir() with the remote directory argument 'out', which returns a list of files relative to the remote directory. (Point is: you need to prepend the remote directory to the file name to create a correctly qualified path.)
3. You're not handling the stream event error, so I suspect you're not getting useful error messages to help troubleshoot.

Try something like:

Looking at the code for exec(), you aren't going to get any value out of it (the result of exec() will always be undefined

And since that result is what gets passed back out to map to be added into the final outcome ... you're getting an array of undefined.

It looks like you'll need to re-think your strategy so that you're updating your array from within the callback.

I tend to do as you are considering with results = [] - and then inside of callback, I use results.push(usefulValue)

When you do that, you'll want to stop using .map()

.map() converts one array to another array by calling a method and building the output array from the responses.

So to change to using an "external" array, you'll want to use a for loop instead of .map()

Comment below line in /etc/sudoers file.

#Defaults requiretty