-- /bin/cat - Concatenate files and print on stdout.
local filename = arg[1]
if not filename then
  return "" -- No arguments, return nothing.
end

local target_node = current_dir.children[filename]

if not target_node then
  return "cat: " .. filename .. ": No such file or directory."
end

if target_node.type == 1 then
  return "cat: " .. filename .. ": Is a directory"
end

-- It's a file, return it's contents. :)
return target_node.content