列出ruby版本
console:~$ rvm list
rvm rubies
ruby-2.0.0-p481 [ i686 ]
# => - current
# =* - current && default
# * - default
尝试使用特定版本的ruby
console:~$ rvm use 2.0.0
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.
当前回答
和其他答案一样的原则，只是觉得这比重新开放终端更快:)
bash -l -c "rvm use 2.0.0"
其他回答
如果你不想每次打开一个终端都这样，再做一遍上面的建议，只需添加
source ~/.rvm/scripts/rvm
在~/.bashrc的末尾
和其他答案一样的原则，只是觉得这比重新开放终端更快:)
bash -l -c "rvm use 2.0.0"
您需要添加源~/。Rvm /scripts/ Rvm到~/。your_shellrc文件。从现在开始，当你加载一个shell时，rvm将被加载。
例如:
如果你使用的是ZSH shell，需要添加~/。zshrc中
如果您使用bash shell，需要添加~/。bashrc文件(
然后打开一个新标签，看看效果。
Usually this is caused by shell initialization files. Search for PATH=... entries.
You can also re-add RVM to your profile by running: rvm get stable --auto-dotfiles
To fix it temporarily in this shell session run: rvm use ruby-2.6.5
To ignore this error add "rvm_silence_path_mismatch_check_flag=1" to your "~/.rvmrc" file.
以下工作为我在ubuntu 19.1
source ~/.rvm/scripts/rvm
