How can I uninstall Ruby on ubuntu?

Question

How can I uninstall Ruby 1.9.2dev (2010-07-02) [i486-linux] on ubuntu? Need to reinstall - please help

Answer 1

If you used rbenv to install it, you can use

rbenv versions 

to see which versions you have installed.

Then, use the uninstall command:

rbenv uninstall [-f|--force] <version>

for example:

rbenv uninstall 2.4.0  # Uninstall Ruby 2.4.0

If you installed Rails, it will be removed, too.

Answer 2

Run the following command on the terminal:

sudo apt-get autoremove ruby

Answer 3

You can use sudo apt remove ruby

Answer 4

Uninstall the make install software when make uninstall invalid.

• make install will create file '.installed.list'
• Choose to clean up the files described in .installed.list (need to be careful if you have multiple versions)
• Case: ruby2.4 switch to ruby2.3, thinking directly delete all ruby software, and then re-make install 2.3, see: Ruby # Installation Guide
• make install -> .installed.list
• see .installed.list file, delete all install files.

‌

rm -rf /usr/local/include/ruby-*
rm -rf /usr/local/lib/ruby
rm /usr/local/bin/erb /usr/local/bin/gem /usr/local/bin/irb /usr/local/bin/rdoc /usr/local/bin/ri /usr/local/bin/ruby
rm /usr/local/share/man/man1/erb.1 /usr/local/share/man/man1/irb.1 /usr/local/share/man/man1/ri.1 /usr/local/share/man/man1/ruby.1
rm /usr/local/lib/libruby-static.a
rm -rf /usr/local/lib/pkgconfig/ruby-*
which ruby
pkg-config --list-all|grep ruby

Answer 5

Run the following command from your terminal:

sudo apt-get purge ruby

Usually works well for me.