# File lib/guard/notifiers/libnotify.rb, line 38
      def available?(silent = false)
        if RbConfig::CONFIG['host_os'] =~ /linux|freebsd|openbsd|sunos|solaris/
          require 'libnotify'

          true

        else
          ::Guard::UI.error 'The :libnotify notifier runs only on Linux, FreeBSD, OpenBSD and Solaris.' unless silent
          false
        end

      rescue LoadError
        ::Guard::UI.error "Please add \"gem 'libnotify'\" to your Gemfile and run Guard with \"bundle exec\"." unless silent
        false
      end