如何在 Ruby 中执行 Windows CLI 命令?

发布于 2024-10-30 05:37:42 字数 286 浏览 1 评论 0原文

我有一个文件位于目录“C:\Documents and Settings\test.exe”中,但是当我在单个 qoutes 中写入命令 `C:\Documents and Settings\test.exe 时(我我无法在此框中显示),用于在 Ruby 中执行命令,但我无法执行此操作,收到的错误是找不到文件或目录。我尝试用“//”和“\”替换“\”,但似乎没有任何效果。我还使用了system、IO.popen和exec命令,但所有努力都是徒劳的。另外 exec 命令使程序退出,这是我不希望发生的。

提前致谢。

I have a file located in the directory "C:\Documents and Settings\test.exe" but when I write the command `C:\Documents and Settings\test.exe in single qoutes(which I am not able to display in this box), used for executing the commands in Ruby, I am not able to do so and the error that I recieve is No file or Directory found. I have tried replacing "\" with "//" and "\" but nothing seems to work. I have also used system, IO.popen and exec commands but all efforts are in vain. Also exec commands makes the program to make an exit which I don't want to happen.

Thanks in advance.

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疑心病 2024-11-06 05:37:42

反引号环境就像双引号,因此反斜杠用于转义。此外,Ruby 会将空格解释为分隔命令行参数,因此您需要引用整个内容:

`"C:\\Documents and Settings\\test.exe"`

另一个选择是使用 system 并强制使用第二个参数。如果 system 获取多个参数,它会将第一个参数视为要执行的命令的路径,并且您不需要引用该命令:

system('C:\Documents and Settings\test.exe','')

请注意使用 single 引号,所以我们没有转义反斜杠。

当然,这不会给你带来标准的输出/错误,所以如果你使用的是 Ruby 1.9.2,你可以使用非常方便的 Open3 库,它的工作方式类似于 system,但为您提供有关刚刚运行的进程的更多信息:

require 'open3'

stdout,stderr,status = Open3.capture3('C:\Documents and Settings\test.exe','')

puts stdout # => string containing standard output of your command
puts stderr # => string containing standard ERROR of your command
if status.success?
  puts "It worked!"
else
  puts "OH NOES! Got exit code #{status.exitstatus}"
end

The backtick environment is like double-quotes, so backslash are used for escaping. Further, Ruby will interpret the spaces as separating command-line arguments, so you need to quote the entire thing:

`"C:\\Documents and Settings\\test.exe"`

Another option is to use system and force a second argument. If system gets more than one argument, it treats the first argument as the path to the command to execute and you don't need to quote the command:

system('C:\Documents and Settings\test.exe','')

Note the use of single quotes, so we don't have escape the backslashes.

Of course, this won't get you the standard out/error, so if you are on Ruby 1.9.2, you can use the awesomely handy Open3 library, which works like system, but gives you more information about the process you just ran:

require 'open3'

stdout,stderr,status = Open3.capture3('C:\Documents and Settings\test.exe','')

puts stdout # => string containing standard output of your command
puts stderr # => string containing standard ERROR of your command
if status.success?
  puts "It worked!"
else
  puts "OH NOES! Got exit code #{status.exitstatus}"
end
小猫一只 2024-11-06 05:37:42
`"C:\Documents and Settings\test.exe"`

`exec "C:\Documents and Settings\test.exe"`

或任何引用中的内容

`"C:\Documents and Settings\test.exe"`

or

`exec "C:\Documents and Settings\test.exe"`

or whatever in qoutes

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