How to install Ruby on CentOS and RHEL

How to install Ruby on CentOS/Rhel7/6? Ruby is a dynamic, object-oriented programming language that is simple and effective. RVM (Ruby Version Manager) is a tool for installing and managing multiple Ruby versions on a single operating system.

This article will introduce installing RVM on the system. Then use RVM to install the latest Ruby on CentOS and RedHat systems.

Step 1: Installation Requirements

First, you need to install all the required ruby ​​installation on our system using the following commands Bag.

# yum install gcc-c++ patch readline readline-devel zlib zlib-devel \
   libyaml-devel libffi-devel openssl-devel make \
   bzip2 autoconf automake libtool bison iconv-devel sqlite-devel

Step 2: Install RVM

Now, use the following command to install the latest stable version of RVM on your system. This command will automatically download all required files and install them on your system.

# curl -sSL https://rvm.io/mpapis.asc | gpg2 --import -
# curl -sSL https://rvm.io/pkuczynski.asc | gpg2 --import -
# curl -L get.rvm.io | bash -s stabl

Also, run the following command to load the RVM environment.

# source /etc/profile.d/rvm.sh
# rvm reload

Step 3: Verify dependencies

Now use the following command to verify that all dependencies have been installed correctly. This will install other missing dependencies on your system.

# rvm requirements run

Checking requirements for centos.
Requirements installation successful

Step 4: Install Ruby on CentOS

Now, your system is ready for Ruby installation. You can find the Ruby version available for installation using the command below.

# rvm list known

Step 5: Set Default Ruby Version

First, check the Ruby version currently installed on your system. This way we can find out which version the system is currently using, and which version is set as default.

# rvm list 

   ruby-2.4.4 [ x86_64 ]
 * ruby-2.5.1 [ x86_64 ]
=> ruby-2.6.0 [ x86_64 ]

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

After that, use the rvm command to set the default Ruby version to be used by the application.

# rvm use 2.6 --default

Using /usr/local/rvm/gems/ruby-2.6.0

Step 6: Verify current Ruby version

Using the following command, you can check the Ruby version currently in use.

# ruby --version

ruby 2.6.0p0 (2018-12-25 revision 66547) [x86_64-linux]

You’re done, Ruby has been successfully installed on your system.

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