df CMD-Tool

-- df Commandline-Tool for Computercraft made by XDjackieXD

function scaleByte(Size)
  local ret = ""
  if Size <= 999 then
    ret = (Size .. "B")
  elseif Size >= 1000 and Size <= 999999 then
    ret = ((Size/1024) .. "kB")
  elseif Size >= 1000000 then
    ret = ((Size/1024/1024) .. "MB")
  end
  return ret
end


local freePC = fs.getFreeSpace("/")
local freeDisk = {}


local disks = true

if fs.exists("/disk") then
  freeDisk[1] = fs.getFreeSpace("/disk")
  local a = 2
  while disks do
    if fs.exists("/disk"..a) then
      if a>1 then
        freeDisk[a] = fs.getFreeSpace("/disk"..a)
      end
    else disks = false end
    a=a+1
  end
end


print("Filesystem     Available")

write("/")
local x,y = term.getCursorPos()
term.setCursorPos(16,y-1)
print(scaleByte(freePC))

for i=1, #freeDisk do
  if i==1 then
    write("/disk")
  else
    write("/disk"..i)
  end
  local x,y = term.getCursorPos()
  term.setCursorPos(16,y)
  print(scaleByte(freeDisk[i]))
end