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

List the ruby versions

console:~$ rvm list

rvm rubies

ruby-2.0.0-p481 [ i686 ]

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

Try to use a specific version of 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.

From a new Ubuntu 16.04 Installation

1) Terminal => Edit => Profile Preferences

2) Command Tab => Check Run command as a login shell

3) Close, and reopen terminal

rvm --default use 2.2.4

     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.

If RVM was installed with dedicated ubuntu RVM installer https://github.com/rvm/ubuntu_rvm the path to RVM scripts will be different /usr/share/rvm/scripts/rvm. So to add it to your .bashrc run the following command:

echo 'source "/usr/share/rvm/scripts/rvm"' >> ~/.bashrc

If you don't want that every time you open a terminal, do the suggestion above again, just add

source ~/.rvm/scripts/rvm

at the end of ~/.bashrc

Following work for me in ubuntu 19.1

source ~/.rvm/scripts/rvm

My env is OSX Yosemite. Had the same issue .... solved by adding the following

1) edit and add the following line to .bash_profile file.

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

2) Restart terminal and try RVM command again

You need to add source ~/.rvm/scripts/rvm to ~/.your_shellrc file. From now when you load a shell, rvm will be loaded.

For example:

if you are using zsh shell, need to add in ~/.zshrc file

if you are using bash shell, need to add in ~/.bashrc file

And then open a new tab to see the effect.

Type bash --login from your terminal. And then give rvm use 2.0.0

The error is due to rvm is not running as in login shell. Hence try the below command:

/bin/bash --login

You will able run rvm commands instantly as login shell in terminal.

Thanks!

For me in Ubuntu(18.08), I have added below line in .bashrc and it works.

 source /home/username/.rvm/scripts/rvm

Please add this line.

It seems like your rvm does not load ".bash_profile" properly. I have done to fix it in MAC OS X or Ubuntu 14.04 by opening terminal and write:

source ~/.rvm/scripts/rvm

FWIW- I just ran across this as well, it was in the context of a cancelled selenium run. Perhaps there was a sub-shell being instantiated and left in place. Closing that terminal window and opening a new one was all I needed to do. (macOS Sierra)

Same principle as other answers, just thought it was quicker than re-opening terminals :)

bash -l -c "rvm use 2.0.0"