fake sendmail / just another null mailer written in Lua and seawolf

sendmail.lua

#!/usr/bin/env lua5.1

local seawolf = require 'seawolf'.__build('variable', 'behaviour')
local print_r = seawolf.variable.print_r
local temp_dir = seawolf.behaviour.temp_dir

local ts = os.date('%Y-%m-%d %H:%M:%S')

local output = ([[----
-- %s

Arguments: %s
%s]]):format(ts, print_r(arg, 1), io.read '*a')

local fh = io.open(temp_dir() .. '/null_mailer.log', 'a+')
if fh then
  fh:write(output)
end

This fake sendmail works as a logger, it reads from STDIN and outputs it to $TMP/null_mailer.log. Nice for debugging!