Ubuntu ruby version keeps changing even after specifying default version in rvm

Question

I want to use ruby 2.3.4 for my rails application which I have installed using rvm on Ubuntu 16.04.

after using command rvm list.

rvm rubies =* ruby-2.3.4 [ x86_64 ] # => - current # =* - current && default # * - default

but when i use ruby -v I get.

ruby 2.5.0p0 (2017-12-25 revision 61468) [x86_64-linux]

so I used rvm --default use 2.3.4.

which does change the version to 2.3.4 when I check using ruby -v but when I restart the terminal or system it changes back to 2.5.0

I want to know how to include 2.5.0 into rvm or remove it.

Remove the system-wide version with sudo apt-get remove ruby. — Aleksei Matiushkin
– Aleksei Matiushkin, Commented Mar 3, 2018 at 8:13
@mudasobwa tried that but I get Package 'ruby' is not installed, so not removed — Gautam Chibde
– Gautam Chibde, Commented Mar 3, 2018 at 8:48
Then check you have no rbenv or any other concurrent ruby version manager installed. — Aleksei Matiushkin
– Aleksei Matiushkin, Commented Mar 3, 2018 at 9:03
Can you see if this works - stackoverflow.com/questions/26867714/… — arjun
– arjun, Commented Mar 3, 2018 at 9:35

Prince Bansal · Accepted Answer · 2018-03-03 16:42:12Z

Check that .bash_profile contains below lines:

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

Check .bashrc, .zshrc, .mkshrc file contains below lines at end of file:

export PATH="$PATH:$HOME/.rvm/bin"

if not then,

First Run below command then follow link to install rvm:

rm -rf ~/.rvm

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