Could not find "jekyll" (> = 0)

Question

Using jekyll -v returns the following:

/Library/Ruby/Site/2.0.0/rubygems/dependency.rb:308:in 'to_specs': Could not find "jekyll" (> = 0) among 21 common gems (Gem :: MissingSpecError) Checked at' GEM_PATH = / Users / myusername / .rvm / gems / ruby-2.4.2: /Users/myusername/.rvm/gems/ ruby-2.4.2@global ', execute' gem env 'for more information from / Library / Ruby / Site / 2.0.0 / rubygems / dependency.rb: 320: in 'to_spec' from / Library / Ruby / Site / 2.0.0 / rubygems / core_ext / kernel_gem.rb: 65: in 'gem' from / usr / local / bin / jekyll: 22: in ``

What's happening?

Answer 1

It seems that you do not have jekyll gem installed, try installing it with

 gem install jekyll 

and remember that if you use rvm, you need to choose the version that you will use in this terminal session,

 rvm use xxx 

or set the default value, so every time you open the terminal, then the version used is installed by default.

 rvm --default use xxx