如何在Rake任务中执行命令？ [英] How to execute commands within Rake tasks?

问题描述

我的rails应用程序中有rake任务。我想在rake任务中运行命令行命令。我怎样才能做到这一点。我尝试了以下操作，但失败了

  desc向所有用户发送时事通讯 
任务：sending_mail做
运行 cd＃{RAILS_ROOT}&& ar_sendmail -o -t Newsletters -v 
系统 cd＃{RAILS_ROOT}&&ar_sendmail -o -t NewsLetters -v& 
 end 
  

上述运行命令会抛出未定义的运行方法&系统命令不会引发任何错误，但不会执行。

解决方案

此链接可以帮助您将命令行命令运行到ruby中。 / p>

http://zhangxh.net/programming/ruby/6-ways-to-run-shell-commands-in-ruby/

从Ruby调用shell命令

http：// blog。 jayfields.com/2006/06/ruby-kernel-system-exec-and-x.html

 ％ x [command] .each做| f | 
的值= f 
结束
  

I have the rake tasks in my rails application. i want to run a commandline commands with in rake task. how can i do this. i tried by the following but fails

desc "Sending the newsletter to all the users"
task :sending_mail do
  run "cd #{RAILS_ROOT} && ar_sendmail -o -t NewsLetters -v"
  system "cd #{RAILS_ROOT} && ar_sendmail -o -t NewsLetters -v &"
end

The above run command throws run method undefined & System command not throwing any errors but not executed.

解决方案

This links may help you run command line command into ruby ...

http://zhangxh.net/programming/ruby/6-ways-to-run-shell-commands-in-ruby/

Calling shell commands from Ruby

http://blog.jayfields.com/2006/06/ruby-kernel-system-exec-and-x.html

%x[command].each do |f|
  value = f
end

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