How to install gem linux

How To Install RubyGems on Linux

In this article, we will discuss how to install RubyGems on Linux. RubyGems is a package manager that allows you to easily install and manage Ruby software packages on your Linux machine.

Before we begin, it is important to note that RubyGems comes pre-installed with Ruby, so if you have Ruby installed on your machine, you should already have RubyGems. However, if you do not have Ruby installed, you can install it using your distribution package manager.

Once you have Ruby installed, you can check whether or not RubyGems is installed by running the following command in your terminal:

If you see a version number returned, then RubyGems is already installed on your machine. If not, you will need to install it manually.

To install RubyGems on Linux, follow the steps below:

Install the RubyGems on Linux (Ubuntu)

The first step in installing RubyGems on Linux is to install the RubyGems package. To do this, open your terminal and type the following command:

sudo apt-get install rubygems

This command will install the RubyGems package on your machine.

Update RubyGems on Linux

Once RubyGems is installed, you should update it to the latest version. To do this, run the following command:

This command will update RubyGems to the latest version available.

Install RubyGems dependencies

RubyGems requires some dependencies to function properly. To install these dependencies, run the following command:

sudo apt-get install build-essential

sudo apt install ruby-full

This command will install the necessary dependencies for RubyGems to function.

Verify the installation

To verify that RubyGems is installed correctly, run the following command:

This command should return the version number of RubyGems that you just installed.

Install a gem

Now that RubyGems is installed and functioning properly, you can use it to install gems. To install a gem, run the following command:

Replace with the name of the gem you want to install. For example, to install the rails gem, you would run the following command:

This command will install the rails gem and any necessary dependencies.

Install the RubyGems on Linux (CentOS)

Update your system

Before installing RubyGems, it is recommended to update your system to ensure that you have the latest software packages installed. To update your CentOS system, run the following command:

Install Ruby and RubyGems on Linux

CentOS comes with a version of Ruby installed by default, but it may not include RubyGems. To install Ruby and RubyGems on CentOS, run the following command:

sudo yum install ruby rubygems

This command will install both Ruby and RubyGems on your system.

Verify the installation

After installing Ruby and RubyGems, you can verify that they are installed correctly by running the following commands:

[root@Virtono-Tutorials ~]# ruby -v ruby 2.0.0p648 (2015-12-16) [x86_64-linux] [root@Virtono-Tutorials ~]# gem -v 2.0.14.1 [root@Virtono-Tutorials ~]# 

These commands should return the version numbers of Ruby and RubyGems respectively.

Install a gem

To install a gem using RubyGems on CentOS, you can use the same command as on other Linux distributions:

Replace with the name of the gem, you want to install. For example, to install the rails gem, you would run the following command:

This command will install the rails gem and any necessary dependencies.

How to fix the following error:

[root@Virtono-Tutorials ~]# sudo gem install rails
Fetching: concurrent-ruby-1.2.2.gem (100%)
ERROR: Error installing rails:
concurrent-ruby requires Ruby version >= 2.3.
[root@Virtono-Tutorials ~]#

Install a newer version of Ruby

If your version of Ruby is older than 2.3, you will need to install a newer version. There are several ways to do this, but one of the most common is to use a Ruby version manager such as rvm or rbenv .

# sudo yum install -y git curl zlib-devel gcc-c++ patch readline readline-devel \ libyaml-devel libffi-devel openssl-devel make bzip2 autoconf automake libtool bison sqlite-devel # git clone https://github.com/rbenv/rbenv.git ~/.rbenv echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc echo 'eval "$(rbenv init -)"' >> ~/.bashrc source ~/.bashrc # git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build # rbenv install 2.3.8 #rbenv global 2.3.8 

Note: Remove “#”

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How To Install gem on Ubuntu 22.04

In this tutorial we learn how to install gem on Ubuntu 22.04.

What is gem

Gem is a loadable library for Pure Data (Pd), which adds OpenGL graphics rendering and animation to Pd. Pd is a graphical programming language and computer music system.

This package contains the core library. If you want to use external data (live video capture, film footage, still images, …), you have to install one (or all) of the gem-plugin-* packages.

There are three ways to install gem on Ubuntu 22.04. We can use apt-get , apt and aptitude . In the following sections we will describe each method. You can choose one of them.

Install gem Using apt-get

Update apt database with apt-get using the following command.

After updating apt database, We can install gem using apt-get by running the following command:

sudo apt-get -y install gem 

Install gem Using apt

Update apt database with apt using the following command.

After updating apt database, We can install gem using apt by running the following command:

Install gem Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.

After updating apt database, We can install gem using aptitude by running the following command:

sudo aptitude -y install gem 

How To Uninstall gem on Ubuntu 22.04

To uninstall only the gem package we can use the following command:

Uninstall gem And Its Dependencies

To uninstall gem and its dependencies that are no longer needed by Ubuntu 22.04, we can use the command below:

sudo apt-get -y autoremove gem 

Remove gem Configurations and Data

To remove gem configuration and data from Ubuntu 22.04 we can use the following command:

Remove gem configuration, data, and all of its dependencies

We can use the following command to remove gem configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge gem 

References

Summary

In this tutorial we learn how to install gem package on Ubuntu 22.04 using different package management tools: apt, apt-get and aptitude.

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How To Install gem on Ubuntu 20.04

In this tutorial we learn how to install gem on Ubuntu 20.04.

What is gem

Gem is a loadable library for Pure Data (Pd), which adds OpenGL graphics rendering and animation to Pd. Pd is a graphical programming language and computer music system.

This package contains the core library. If you want to use external data (live video capture, film footage, still images,…), you have to install one (or all) of the gem-plugin-* packages. Description-md5: 36a8e97cbc8b96acc75b5f0c96f78d8b Task: ubuntustudio-audio

There are three ways to install gem on Ubuntu 20.04. We can use apt-get , apt and aptitude . In the following sections we will describe each method. You can choose one of them.

Install gem Using apt-get

Update apt database with apt-get using the following command.

After updating apt database, We can install gem using apt-get by running the following command:

sudo apt-get -y install gem 

Install gem Using apt

Update apt database with apt using the following command.

After updating apt database, We can install gem using apt by running the following command:

Install gem Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.

After updating apt database, We can install gem using aptitude by running the following command:

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