Ruby 1.9 如果我有一个指向 ruby​​ 的shebang，为什么系统看不到它? [英] Ruby 1.9 If I have a shebang pointing to ruby, why doesn't the system see it?

问题描述

我正在使用 Ubuntu.我正在尝试运行一个 ruby​​ 文件 todo.rb我将此shebang添加为文件的第一行

I'm using Ubuntu. I'm trying to run a ruby file todo.rb I added this shebang as the very first line of the file

#!/usr/bin/env ruby

我转到rb文件所在的目录，然后运行todo.rb并得到错误todo.rb: command not found.

I go to the directory where the rb file is located and then run todo.rb and get error todo.rb: command not found.

所以我直接进入了/usr/bin目录.我找到了 env 命令并运行了它.env 命令的输出显示 ruby​​ 路径和 ruby​​ 数据:

So I went directly to the /usr/bin directory. I found the env command and ran it. The output of the env command displays ruby paths and ruby data:

MY_RUBY_HOME=/home/tallercreativo/.rvm/rubies/ruby-1.9.2-p290
PATH=/home/tallercreativo/.rvm/gems/ruby-1.9.2-p290/bin:/home/tallercreativo/.rvm/gems/ruby-1.9.2-p290@global/bin:/home/tallercreativo/.rvm/rubies/ruby-1.9.2-p290/bin:/home/tallercreativo/.rvm/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
GEM_PATH=/home/tallercreativo/.rvm/gems/ruby-1.9.2-p290:/home/tallercreativo/.rvm/gems/ruby-1.9.2-p290@global
RUBY_VERSION=ruby-1.9.2-p290

因此，我无法使其工作，我将shebang更改为直接指向ruby:

So since, I couldn't make it work, I changed the shebang to point to ruby directly:

#!/home/tallercreativo/.rvm/rubies/ruby-1.9.2-p290/bin/ruby

我得到相同的命令未找到错误.怎么了?

and I get same command not found error. What's wrong?

推荐答案

您需要首先使您的脚本可执行:

You need to first make your script executable:

chmod +x todo.rb

那么你需要像这样运行它:

then you need to run it like so:

./todo.rb

你不能只说 todo.rb 来运行它，除非你把它放在你的 PATH 中，在这种情况下，你可以从任何地方这样做.

You cannot run it by just saying todo.rb, unless you place it in your PATH, in which case you can do so from anywhere.

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