如何使用RVM设置默认的Ruby版本？

Ubuntu 11.

Ubuntu 11。

I do the following:

我做了以下事情：

$ rvm --default use 1.9.2 and I get:

$ rvm --default使用1.9.2然后我得到：

Using /home/md/.rvm/gems/ruby-1.9.2-p180 so that is good.

使用/home/md/.rvm/gems/ruby-1.9.2-p180这样很好。

but when I now open a new terminal window I still get:

但是当我现在打开一个新的终端窗口时，我仍然得到：

$ ruby -v

$ ruby -v

ruby 1.8.7 (2010-08-16 patchlevel 302) [i686-linux]

ruby 1.8.7（2010-08-16 patchlevel 302）[i686-linux]

4 个解决方案

#1

If you put the RVM source line in your bashrc (in order to ensure that non-interactive shells have access to RVM), you will need to source .bashrc from your .bash_profile with the following as the last lines in your .bash_profile

如果将RVM源代码行放在bashrc中（为了确保非交互式shell可以访问RVM），您需要从.bash_profile中获取.bashrc，并将以下内容作为.bash_profile中的最后一行。

if [ -f "$HOME/.bashrc" ]; then
  source $HOME/.bashrc
fi

This pre-supposes that you have

这预先假设你有

[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"

in your $HOME/.bashrc. This is a good way to ensure that both interactive/login and non-interactive shells are able to find and load RVM correctly. Multi-User installs accomplish the same thing via the /etc/profile.d/rvm.sh file.

在你的$ HOME / .bashrc中。这是确保交互式/登录和非交互式shell能够正确查找和加载RVM的好方法。多用户安装通过/etc/profile.d/rvm.sh文件完成相同的操作。

After that, you should have no problems defining a default Ruby to use via

之后，您应该没有定义要使用的默认Ruby的问题

rvm 1.9.2 --default

要么

rvm use 1.9.2@mygemset --default

Its better to define a default gemset to use so as not to pollute your 'default' or 'global' gemsets.

最好定义一个默认的gemset来使用，以免污染你的'默认'或'全局'gemsets。

If you are using non-interactive shells, be aware that they genereally operate in SH-compatibility mode which then requires you to set

如果您使用的是非交互式shell，请注意它们通常在SH兼容模式下运行，然后需要您进行设置

BASH_ENV="$HOME/.bashrc"

in your $HOME/.profile in order you load RVM, or to set that within your script directly. The reason for this is that when bash is operating in SH mode it does not directly load .bash_profile or .bashrc as SH doesn't use those files, and bash is attempting to mimic the loading and execution process of the SH shell.

在$ HOME / .profile中，以便加载RVM，或直接在脚本中设置它。原因是当bash在SH模式下运行时，它不会直接加载.bash_profile或.bashrc，因为SH不使用这些文件，而bash正试图模仿SH shell的加载和执行过程。

#2

do an "rvm list" to see which Ruby versions you have installed.

执行“rvm列表”以查看已安装的Ruby版本。

then do this if you want to change the version only in one terminal session:

如果您只想在一个终端会话中更改版本，请执行此操作：

rvm use 1.8.7

if you want to select the default version for this user account, do this:

如果要为此用户帐户选择默认版本，请执行以下操作：

rvm use --default 1.9.2

See:

看到：

rvm use --help

#3

Late to party - anyway.

迟到派对 - 无论如何。

You did correctly set the default ruby version: rvm --default use 1.9.2

您确实正确设置了默认的ruby版本：rvm --default使用1.9.2

However, you need to update your Gemfile to the target ruby, because RVM references that file to select the working ruby version when you open terminal , that's why it reverted to the previous ruby version.

但是，您需要将Gemfile更新为目标ruby，因为RVM引用该文件以在打开终端时选择工作的ruby版本，这就是它恢复到以前的ruby版本的原因。

#4

To Change the Default Version of ruby:

要更改ruby的默认版本：

In Ubuntu

在Ubuntu

Go to default Terminal of Ubuntu and then follow the instructions:

转到默认的Ubuntu终端，然后按照说明操作：

1) Edit -> Profile Preferences
2) Select "Title and Command"
3) check "Run command as a login shell"
4) restart terminal

And after that run this command:

然后运行此命令：

rvm --default use 2.2.4@gemset_name

rvm --default使用2.2.4@gemset_name

#1