如何使用RVM将Ruby更改为1.9.3版(再次)？

Question

我曾经在Ubuntu上使用Ruby版本1.9.3并进行了更新,可能搞砸了我的bash配置文件,我需要帮助才能将其转回而不是使用版本1.8.7.现在rails s用Ruby 1.8.7打开服务器,因为我在我的应用程序中使用了更新的语法,我得到了错误.

.bash_profile:

cat ~/.bash_profile

### Added by the Heroku Toolbelt
export PATH="/usr/local/heroku/bin:$PATH"

[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*

which rails:

/usr/local/bin/rails

which ruby:

/usr/bin/ruby

ruby -v:

ruby 1.8.7 (2011-06-30 patchlevel 352) [i686-linux]

rvm list:

rvm rubies

=* ruby-1.9.3-p194 [ i686 ]

# => - current
# =* - current && default
#  * - default

rvm use 1.9.3:

RVM is not a function, selecting rubies with 'rvm use ...' will not work.

You need to change your terminal emulator preferences to allow login shell.
Sometimes it is required to use `/bin/bash --login` as the command.
Please visit https://rvm.io/integration/gnome-terminal/ for a example.

Answer 1

您不在登录shell中.要进入登录shell,请尝试以下命令:

/bin/bash --login

之后,您将能够使用RVM选择Ruby.

此外,还有永久的方法,每次打开终端时都不必写这行.试试这个:

Edit menu -> Profile Preferences 

将出现一个对话框,现在选择Run command in login shell.

之后,无论何时打开终端,您都将进入登录shell,并且您将能够使用RVM.

还有另外一种方法,你可以写入/bin/bash --login你.bash_profile 每次重启时加载的方式.