在Ruby中通过SSH从远程位置读取本地文件

Question

I want to access a local file which is located on a device via a remote server location via SSH.

The local file is in this directory

/Desktop/applications.csv

and the IP address of the machine it is located in is 192.168.1.1 and user is user1

How do i read it from a remote location using SSH in Ruby on Rails?

I tried doing this but it fails

hash = Digest::MD5.hexdigest(File.read("ssh  user@192.168.1.1 /Desktop/applications.csv"))

Not sure how to go about it. Any help appreciated.

Answer 1

Have you looked into SSHKit ? It lets you run commands on remote machines, via ssh.

As an example:

require 'sshkit'
require 'sshkit/dsl'
include SSHKit::DSL

on '192.168.1.1'
  within "/Desktop/" do
    with rails_env: :production do
      rake "read_applications"            
    end
  end
end

And the 'read_applications' rake task would do the File.read and whatever else was required.

EDIT:

Does it know what user you're authenticating with? Might need to add the user like this:

on '192.168.1.1'
  within "/Desktop/" do
    as :user do
      # do something
    end
  end
end

And change :user to be your username. There's loads more examples on the Github page.