# File lib/specinfra/command/solaris/base/file.rb, line 3
    def check_contains_within(file, expected_pattern, from=nil, to=nil)
      from ||= '1'
      to ||= '$'
      sed = "sed -n #{escape(from)},#{escape(to)}p #{escape(file)}"
      sed_end = "sed -n 1,#{escape(to)}p"
      checker_with_regexp = check_contains_with_regexp("/dev/stdin", expected_pattern)
      checker_with_fixed  = check_contains_with_fixed_strings("/dev/stdin", expected_pattern)
      "#{sed} | #{sed_end} | #{checker_with_regexp}|| #{sed} | #{sed_end} | #{checker_with_fixed}"
    end