Error While installing Ruby

I have used this procedure.I m using Linux Mint.

I am getting the following error while installing.

E: Unable to locate package libreadline6-dev E: Unable to locate package libyaml-dev E: Unable to locate package libgdbm-dev E: Package 'ncurses-dev' has no installation candidate E: Package 'bison' has no installation candidate E: Package 'subversion' has no installation candidate E: Package 'libffi-dev' has no installation candidate 

5 Answers

I think you didn't installed the rvm requirements .
Install the requirements like libreadline6-dev , libyaml-dev , libgdbm-dev ,etc..
I think This will solve the Problem.

Install all these with the command

sudo apt-get install build-essential openssl libreadline6 libreadline6-dev \ curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-dev sqlite3 \ libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison \ subversion pkg-config 

Or, Just refer this link.

This instructions are old, following rvm installation instructions:

\curl -#L | bash -s stable --autolibs=4 --ruby 

It will:

1. Download and install RVM
2. Enable automatic requirements installation
3. Install ruby including all required dependencies

which OS you using ?
if you using Ubuntu, then use the link :

if you are using windows
then problem while installing in some gem dependence like. 'libffi-dev', less-rail

than used other OS that very well for "Ruby on Rails" like Linux/Ubuntu

If you're using ubuntu, the copy and paste . You might need to hit enter at some point.

this worked for me.

WARNING: The following packages cannot be authenticated!

 apt-get clean # Remove cached packages cd /var/lib/apt mv lists lists.old # Backup mirror info mkdir -p lists/partial # Recreate directory structure apt-get clean apt-get update # Fetch mirror info