Installing Ruby on Ubuntu

Step 1 Verifying

---

Verify the system is update and then run a sudo apt-get update on the terminal.

Step 2 Installing RVM on Ubuntu

---

Open terminal and type

• curl https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer | bash -s stable

This will install RVM on your system.
Please close and open the terminal again to load RVM.
To verify the RVM installation , open Terminal and type

• rvm requirements

This will show a help doc.

Step 3 Installing required RVM packages before installing Ruby

---

Open Terminal and run the below mentioned commands one after the another

• rvm pkg install zlib
• rvm pkg install openssl
• rvm pkg install iconv
• rvm pkg install readline
• rvm pkg install autoconf

Step 4 Installing Ruby

---

Open the Terminal and type the following command

• rvm install 1.8.7 -C --with-openssl-dir=$rvm_path/usr --with-zlib-dir=$rvm_path/usr

Here 1.8.7 reflects the Ruby version 1.8.7 and the latest patch, so to install any specific version or path you specify it by altering the above mentioned command eg.

• rvm install 1.8.7-p334 -C --with-openssl-dir=$rvm_path/usr --with-zlib-dir=$rvm_path/usr
• rvm install 1.9.3 -C --with-openssl-dir=$rvm_path/usr --with-zlib-dir=$rvm_path/usr

Step 5 Verify the installation

---

Open a new Terminal window and type

• rvm list This will display the list of the different rubies installed on the system.
  To use a specific Ruby version use the following command
• rvm use 1.8.7
• rvm use 1.8.7-p334
• rvm use 1.9.3 To make a Ruby version default for the system use the command
• rvm alias create default 1.8.7
• rvm alias create default 1.8.7-p334
• rvm alias create default 1.9.3

This Ruby version will be the default version of Ruby on the system , to change to other versions of Ruby use the above mentioned commands.
To use default incase of switching use

• rvm use default

To remove RVM from the system use the command

• rvm implode