红宝石逃生ARGV参数或字符串作为参数传递给shell命令 [英] Ruby escape ARGV argument or string as argument to shell command

问题描述

确定这是推动我疯了：

 `LS＃{/媒体/音乐/ Miles Davis的}`
 

失败，因为万里行和戴维斯

之间的空间

说我写一个Ruby脚本和用户通过文件路径作为参数。我如何逃避它喂到一个shell-out命令。是的，是的，我知道，应该避免脱壳而出。但是，这是一个人为的例子，我还需要这一点。

我会做系统（LS，ARGV [0]），但它不返回LS的标准输出输出作为一个字符串，这是反引号做的很好。

如何逃生无论你在shellout插入？

<的div类=h2_lin>解决方案

使用要求'shellwords'和 Shellwords.escape ，这将解决这种东西给你：

<一个href=\"http://apidock.com/ruby/Shellwords/shellescape\">http://apidock.com/ruby/Shellwords/shellescape

Ok this is driving me crazy:

`ls #{"/media/music/Miles Davis"}`

fails because of the space between "Miles" and "Davis"

Say I write a ruby script and a user passes file path as an argument. How do I escape it and feed to a shell-out command. Yes, yes, I know, shelling out should be avoided. But this is a contrived example, I still need this.

I would do system("ls", ARGV[0]), but it doesn't return the stdout output of ls as a string, which is what backticks do well.

How do escape whatever you insert in a shellout?

解决方案

Use require 'shellwords' and Shellwords.escape, which will fix this sort of stuff for you:

http://apidock.com/ruby/Shellwords/shellescape

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