Just making a review since not much is going on here at Hawkee at the moment. I'm just demonstrating another way of looping through the awayu.sys with mIRC's file handling:

raw 315:*:{ 
  var %y = 1
  var %z = 0
  while (%y <= $lines(awayu.sys)) {
    if ($read(awayu.sys,%y) isop %chan) { 
      set %awayu $addtok(%awayu,$read(awayu.sys,%y),32)
      inc %z
    }
    inc %y
  }
  mode %chan -o $+ $str(o,$numtok(%awayu,32)) %awayu
  if (%z) { msg %chan These nicks are set as away or were idling for more than $duration(1800,2) }
}

can be done as:

raw 315:*:{
  .fopen op awayu.sys
  while (!$feof) && (!$ferr) { 
    if ($fread(op) isop %chan) { 
      set %awayu $addtok(%awayu,$v1,32) 
    }
  }
  .fclose op
  mode %chan $+(-,$str(o,$numtok(%awayu,32)) %awayu)
  if (%z) { msg %chan These nicks are set as away or were idling for more than $duration(1800,2) }
}