DirectSsh

In order to use SSH or SCP without the need to enter password every time, this gem will create public/private ssh rsa keys if they do not exist and send public key to remote server automatically only if necessary.

Installation

Add this line to your application's Gemfile:

gem 'direct_ssh'

And then execute:

$ bundle

Or install it yourself as:

$ gem install direct_ssh

Original Style Examples

Scripts like these

a. scripts which ask password every time

#!/usr/bin/env ruby
# encoding: UTF-8

require 'net/ssh'
require 'highline/import'

host = '127.0.0.1'
user = 'user'

options = {}
options[:password] = ask("#{user}@#{host}'s password: ") { |q| q.echo = false }

Net::SSH.start(host, user, options) { |ssh|
    puts ssh.exec!('cat /etc/*-release')
}

b. scripts which expose password directly

#!/usr/bin/env ruby
# encoding: UTF-8

require 'net/ssh'

Net::SSH.start('127.0.0.1', 'user', {:password => 'password'}) { |ssh|
    puts ssh.exec!('cat /etc/*-release')
}

can be rewritten like examples in DirectSsh Style SSH Examples.

DirectSsh Style SSH Examples

c. direct_ssh example with block form

#!/usr/bin/env ruby
# encoding: UTF-8

require 'direct_ssh'

DirectSsh.start('127.0.0.1', 'user') { |ssh|
    puts ssh.exec!('cat /etc/*-release')
}

d. direct_ssh example without block

#!/usr/bin/env ruby
# encoding: UTF-8

require 'direct_ssh'

ssh = DirectSsh.start('127.0.0.1', 'user')
puts ssh.exec!('cat /etc/*-release')
ssh.close

DirectSsh Style SCP Examples

e. direct_ssh scp example

#!/usr/bin/env ruby
# encoding: UTF-8

require 'direct_ssh'
require 'net/scp'

local_path = __FILE__
file_name  = File.basename(local_path)

DirectSsh.start('127.0.0.1', 'user', {:port => 22}) { |ssh|
    # check whether this script file already exists on remote server
    puts ssh.exec!("ls -l /tmp/#{file_name}")

    # upload this script file to '/tmp' of remote server
    ssh.scp.upload!(local_path, '/tmp')

    # check again whether this script file already exists on remote server
    puts ssh.exec!("ls -l /tmp/#{file_name}")

    # download remote file and save it using another name
    ssh.scp.download!("/tmp/#{file_name}", "./#{file_name}.download")
}

Shell Commands

The direct_ssh shell command checks status of ssh connection to the remote server. It will ask password and send public key to remote server if necessary.

After ssh connection created successfully, The cat /etc/*-release command will be executed.

Usage: direct_ssh user@host [-p port]
 - default port 22 will be used if you leave it off

The direct_scp shell command uses direct_ssh to upload or download files.

Usage:
1) upload file to remote server
 # direct_scp [-r] [-p port] local_file user@host:remote_file
2) download file from remote server
 # direct_scp [-r] [-p port] user@host:remote_file local_file
3) print this message
 # direct_scp -h

default port 22 will be used if you leave it off

Contributing

Fork it
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Add some feature')
Push to the branch (git push origin my-new-feature)
Create new Pull Request

direct_ssh

Development

Runtime