class Autodetect
	def self.uname
		os = nil : String?
		# do not fake it
		Process.run("uname") do |p|
			p.output.each_line do |line|
				os = line
			end
		end

		os
	end
	class_property print_autodetect : Bool = false

	def self.which(cmd : String)
		if Process.run("which", [ cmd ]).success?
			puts "#{cmd} installed" if print_autodetect
			true
		else
			puts "#{cmd} not installed" if print_autodetect
			false
		end
	end
end