_G.DEFAC, _G.DESEV = 6, 0
if component then
 _G.Log = ""
 _G.logt = {}
 function log(...)
  local ta = {...}
  local sev, fac = _G.DEFAC, _G.DESEV
  if ta[#ta] == true then
   ta[#ta] = nil
   sev, fac = table.remove(ta,#ta),table.remove(ta,#ta)
  end
  for k,v in ipairs(ta) do
   if component.list("ocemu")() then
    component.invoke(component.list("ocemu")(),"log",v)
   end
   logt[#logt+1] = "["..tostring(computer.uptime()).."] ["..tostring(sev).."] ["..tostring(fac).."] "..tostring(v)
   computer.pushSignal("syslog",sev,fac,v)
   if #logt > 16 then
    table.remove(logt,1)
   end
  end
  _G.Log = ""
  for k,v in ipairs(logt) do
   _G.Log=_G.Log .. v .. "\n"
  end
 end
 print=log
else log = print
end