Ruby Net :: SSH使用变量插值更改目录 [英] Ruby Net::SSH Change directories using variable interpolation

问题描述

我对Ruby还是很陌生，所以如果我遗漏了一些明显的东西，请原谅我.

I am fairly new to Ruby, so please forgive me if I am missing something obvious.

问题在于Ruby似乎没有在Net :: SSH.exec中进行变量插值！方法.

The problem is that Ruby doesn't seem to be doing variable interpolation in the Net::SSH.exec! method.

VCL_DIR = "/usr/local/etc/varnish/"
host = '0.0.0.0'
Net::SSH.start(host, 'root') do |ssh|
  puts "Changing directories to #{VCL_DIR}"
  ssh.exec!("cd #{VCL_DIR}")
  res = ssh.exec!("pwd")
  puts "Server reports current directory as #{res}"
end

输出:

Changing directories to /usr/local/etc/varnish/
Server reports current directory as /root

感谢您的帮助.使用Ruby 1.9.3p194

Any help is appreciated. Using Ruby 1.9.3p194

推荐答案

问题是Net :: SSH对每个exec调用使用不同的shell.解决方案是使用有状态外壳.有一个宝石可以做到这一点，但它已经过时了. Net :: SSH :: Shell通过 https://github.com/mitchellh/net-ssh-shell

The problem is that Net::SSH uses a different shell for each exec call. The solution is to use stateful shell. There is a gem to do this, but it is outdated. Net::SSH::Shell via https://github.com/mitchellh/net-ssh-shell

我选择使用Rye来处理此任务. http://code.google.com/p/rye/

I chose to use Rye to handle this task. http://code.google.com/p/rye/

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