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

     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.

其他回答

FWIW-我只是遇到了这个,它是在取消硒运行的上下文中。也许有一个子shell正在被实例化并留在原地。我所要做的就是关闭终端窗口,打开一个新的窗口。(macOS山脉)

错误是由于rvm没有像登录shell那样运行。因此试试下面的命令:

/bin/bash --login

你可以在终端登录shell时立即运行rvm命令。

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

输入bash——从终端登录。然后给rvm使用2.0.0

以下工作为我在ubuntu 19.1

source ~/.rvm/scripts/rvm