Three ways to install Ruby language in Ubuntu system _ruby topics

Ruby is an open source dynamic programming language that has beautiful syntax for building scalable Web applications. Ruby Gems can be a good way to improve the development efficiency of ruby developers.

There are several ways to install Ruby on an Ubuntu system, and each method takes only a few steps to get it done.

Method One: Use Apt-get installation
You can complete the installation of Ruby using two commands directly.

 code as follows:

# sudo apt-get update
# sudo apt-get install ruby

Or

 code as follows:

# sudo apt-get install ruby2.0

method Two: Use Brightbox PPA warehouse installation

code as follows:

# sudo apt-get install python-software-properties
# sudo apt-add-repository ppa:brightbox/ruby-ng
# sudo apt-get update
# sudo apt-get install ruby2.1 Ruby2.1-dev

method Three: Use RVM installation
RVM is the version Manager tool for Ruby.
1. Installation RVM

 code as follows:

# sudo Apt-get Curl
# curl-l Https://get.rvm.io | Bash-s Stable
# source ~/.RVM/SCRIPTS/RVM

2, the installation of RVM environmental dependence

 code as follows:

# RVM Requirements

3. Install Ruby

 code as follows:

# RVM Install Ruby

If you want to install more than one Ruby version on Ubuntu, you can use the following command to specify the use of RVM as the default Ruby version management.

 code as follows:

# RVM Use Ruby--default

Check the version of Ruby that is currently successfully installed

 code as follows:

# ruby-v

Install Gems 

 code as follows:

# Gem List
# gem install [gem-name]

Like Gem-name can write sass.
If you want to install gems locally, the commands are as follows:

code as follows:

# gem Install--local [path of gem file]

You can use the command to update installed gems, as follows:

 code as follows:

# Gem Update--system

Or

code as follows:

# Gem Update