在 Ruby 中检测操作系统
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Detecting Operating Systems in Ruby
提问by user1546594
Is there a way to detect the operating system in ruby? I am working on developing a sketchup tool that will need to detect Mac vs. Windows.
有没有办法检测 ruby 中的操作系统？我正在开发一个需要检测 Mac 与 Windows 的 Sketchup 工具。
回答by debbie
You can use the osgem:
您可以使用os宝石：
gem install os
And then
进而
require 'os'
OS.linux? #=> true or false
OS.windows? #=> true or false
OS.java? #=> true or false
OS.bsd? #=> true or false
OS.mac? #=> true or false
# and so on.
回答by Thomas Enebo
Here is the best one I have seen recently. It is from selenium. The reason I think it is the best is it uses rbconfig host_os field which has the advantage of working on MRI and JRuby. RUBY_PLATFORM will say 'java' on JRuby regardless of host os it is running on. You will need to mildly tweak this method:
这是我最近看到的最好的一个。它来自硒。我认为它最好的原因是它使用了 rbconfig host_os 字段，它具有在 MRI 和 JRuby 上工作的优势。RUBY_PLATFORM 会在 JRuby 上显示“java”，而不管它运行在什么主机上。您需要稍微调整此方法：
require 'rbconfig'
def os
@os ||= (
host_os = RbConfig::CONFIG['host_os']
case host_os
when /mswin|msys|mingw|cygwin|bccwin|wince|emc/
:windows
when /darwin|mac os/
:macosx
when /linux/
:linux
when /solaris|bsd/
:unix
else
raise Error::WebDriverError, "unknown os: #{host_os.inspect}"
end
)
end
回答by InternetSeriousBusiness
You can use
您可以使用
puts RUBY_PLATFORM
puts RUBY_PLATFORM
irb(main):001:0> RUBY_PLATFORM
=> "i686-linux"
But @Pete is right.
但@Pete 是对的。
回答by Todd A. Jacobs
You can inspect the RUBY_PLATFORMconstant, but this is known to be unreliable in certain cases, such as when running JRuby. Other options include capturing the output of the uname -acommand on POSIX systems, or using a detection gem such as sys-uname.
您可以检查RUBY_PLATFORM常量，但众所周知，这在某些情况下是不可靠的，例如在运行 JRuby 时。其他选项包括uname -a在 POSIX 系统上捕获命令的输出，或使用诸如sys-uname 之类的检测 gem 。
