How to include a chef recipe based on the output from bash command?

Question

I would like to get the count of a particular process , and include the config recipe only if there are no processes.

Something to this effect. How is this possible in chef?

if !( "(ps aux | grep splunkd | grep -v grep | wc -l) > 0 ") 
  include_recipe 'platform::splunk_config' 
end

Answer 1

i can offer an idea to use ruby_block resourece in a conjunction with a guard, and it should be something like:

ruby_block 'splank configuration' do
  block { include_recipe 'platform::splunk_config' }
  not_if "ps aux | grep splunkd | grep -v grep | wc -l > 0"
end

but i haven't tried it :)