为什么我会获得“写入权限"?安装 Rails 时出错? [英] Why do I get "write permission" errors installing Rails?

问题描述

当我使用 rvm use 1.9.2 时，我得到 Rails v3.0.0:

When I use rvm use 1.9.2, I get Rails v3.0.0:

vikas@admin1-DL-H61MXEL:~$ rvm use 1.9.2 --default
Using /home/vikas/.rvm/gems/ruby-1.9.2-p320
vikas@admin1-DL-H61MXEL:~$ rails -v
Rails 3.0.0

当我使用 rvm use 2.0.0 时，我得到 Rails v3.2.13:

When I use rvm use 2.0.0, I get Rails v3.2.13:

vikas@admin1-DL-H61MXEL:~$ rvm use 2.0.0
Using /home/vikas/.rvm/gems/ruby-2.0.0-p195
vikas@admin1-DL-H61MXEL:~$ rails -v
Rails 3.2.13

我需要 Rails v3.2.13 和 Ruby 1.9.2.

I need Rails v3.2.13 with Ruby 1.9.2.

当我使用 rvm use 1.9.2 --default 和 gem install rails -v 3.2.13 时，出现以下错误:

When I used rvm use 1.9.2 --default and gem install rails -v 3.2.13, I got the following error:

While executing gem ... (Gem::FilePermissionError) You don't have write permissions into the /home/vikas/.rvm/gems/ruby-1.9.2-p320/bin directory. 

This is the error I'm facing now.

推荐答案

出现错误的最可能原因:

The most likely reason you're getting the error:

(Gem::FilePermissionError) You don't have write permissions into the /home/vikas/.rvm/gems/ruby-1.9.2-p320/bin directory. 

是因为，在某些时候，您使用了 sudo 或在使用 RVM 安装 gem 时以 root 身份运行.发生这种情况时，文件和/或文件夹的所有权更改为 root 的权限，您无法以自己的身份运行.

Is because, at some point, you used sudo or were running as root when you use RVM to install a gem. When that happened, the ownership of files and/or folders changed to root's permissions, which you can't override running as you.

您不想以 root 身份运行，或者在运行 rvm 或 gem 时使用 sudo EVER如果您安装了 RVM，则可以在主目录的沙箱中提供 Ruby 命令.

You don't want to run as root, or use sudo EVER when running rvm or gem commands if you have a RVM installation to provide Ruby in a sandbox in your home directory.

要解决此问题，请尝试以下命令:

To fix this, try this command:

sudo chown -R vikas ~/.rvm

这将使用 sudo 将 ~/.rvm 目录中所有文件的所有权从root"用户更改为您自己的帐户.这至少需要几秒钟，所以让它运行.

That will use sudo to change ownership of all files in the ~/.rvm directory to your own account, from the "root" user. This will take at least a few seconds so let it run.

运行后，您应该能够切换到每个 Ruby 并删除已安装的 Rails:

Once that has run, you should be able to switch to each of your Rubies and delete the installed Rails:

rvm use 1.9.2
gem uninstall rails
gem install rails -v 3.2.13

那么:

rvm use 2.0.0
gem uninstall rails
gem install rails -v [whatever version you want]
gem install rails -v 

这篇关于为什么我会获得“写入权限"?安装 Rails 时出错?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！