无法使用RVM在红宝石版本之间切换

Question

I want to switch from ruby 1.9.3 to 2.0.0 .

When I run rvm alias show default I get ruby-2.0.0-p481

When I run rvm use default I get

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 an example.

Then when I run ruby -v I get ruby 1.9.3p484

I want to use 2.0.0

rvm 2.0.0 or rvm use 2.0.0 do not work either.

Any ideas? THanks!

Answer 1

Thanks to @japed I managed to solve the issue following the guide here .

I had to check the 'Run command as login shell' checkbox on the Title and Command tab of gnome-terminal's Edit ▸ Profile Preferences dialog. Like here:

Answer 2

As you have already fixed the issue, so this is more of information than help, you can also do it by adding following line to you ~/.bashrc

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

This will permanently fix it.

A temporary one time fix can also be:

source ~/.rvm/scripts/rvm

PS: this is basically exactly what you have already done, but from command prompt