testing version of LuaBIOS and OpenOS

people were having issues getting them to work so now we promote consistency

data/OpenOS/bin/cat.lua

@@ -0,0 +1,39 @@
+local shell = require("shell")
+local fs = require("filesystem")
+
+local args = shell.parse(...)
+if #args == 0 then
+  args = {"-"}
+end
+
+local input_method, input_param = "read", require("tty").getViewport()
+
+for i = 1, #args do
+  local arg = shell.resolve(args[i])
+  if fs.isDirectory(arg) then
+    io.stderr:write(string.format('cat %s: Is a directory\n', arg))
+    os.exit(1)
+  else
+    local file, reason
+    if args[i] == "-" then
+      file, reason = io.stdin, "missing stdin"
+      input_method, input_param = "readLine", false
+    else
+      file, reason = fs.open(arg)
+    end
+    if not file then
+      io.stderr:write(string.format("cat: %s: %s\n", args[i], tostring(reason)))
+      os.exit(1)
+    else
+      repeat
+        local chunk = file[input_method](file, input_param)
+        if chunk then
+          io.write(chunk)
+        end
+      until not chunk
+      file:close()
+    end
+  end
+end
+
+io.stdout:close()