何时/为什么将--env-shebang与红宝石宝石一起使用? [英] When/why to use --env-shebang with ruby gems?

问题描述

Ikenna Okpala推荐了此.gemrc (我稍加修改了):

Ikenna Okpala recommended this .gemrc (I modified it slightly):

---
:verbose: true
:bulk_threshold: 1000
install: --no-ri --no-rdoc --env-shebang
:sources:
- http://gems.rubyforge.org/
:benchmark: false
:backtrace: false
update: --no-ri --no-rdoc --env-shebang
:update_sources: true

我以前没有注意到--env-shebang.我在 http://guides.rubygems.org/command-reference/中查找了--env-shebang的文档. :

I had not noticed the --env-shebang before. I looked up the documentation for --env-shebang at http://guides.rubygems.org/command-reference/:

Install/Update Options:
...
-E, -​-[no-]env-shebang - Rewrite the shebang line on installed scripts to use /usr/bin/env

实际上，为什么--env-shebang选项可能很重要? (我从未使用过.)

Practically speaking, why might the --env-shebang option be important? (I've never used it.)

推荐答案

如果出于某种原因，宝石的作者未使用#!/usr/bin/env ruby，则您可能希望自动更改它.

If for some reason the gem's author didn't use #!/usr/bin/env ruby you may well want to have it automatically changed.

((如果您要问为什么根本不希望使用env shebang行，请此对其进行解释很好.)

(If you're asking why you'd want the env shebang line at all, this explains it pretty well.)

ruby​​gems-developers线程讨论此功能的想法的开始是

The beginning of the rubygems-developers thread discussing the idea for this feature is here.

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