An error occurred while installing curb (0.8.5)

I found the solution here

sudo apt-get install libcurl3-dev

It says it can't install curb gem. Go to curb homepage and check installation section:

On Ubuntu, the dependencies can be satisfied by installing the following packages:

$ sudo apt-get install libcurl3 libcurl3-gnutls libcurl4-openssl-dev

On RedHat:

$ sudo yum install ruby-devel libcurl-devel openssl-devel

On CentOS

sudo yum install libcurl-devel