2.6U

-- WARNING DO NOT EDIT SCRIPT THIS EILL BUG OS
-- if you are best at script why you give it an try
-- to see make an os but if you are an noob
-- dont edit

-- MDE
local mde = "mde.lua"
if fs.exists(mde) then
    shell.run("mde.lua")
end

-- Color Saveing
if fs.exists("bsave.txt") then
  if not term.isColor() then
   term.setBackgroundColor(colors.black)
  else
   local f = fs.open("bsave.txt", "r")
   local savedColor = f.readAll()
   f.close()
   if savedColor == "green" then
     term.setBackgroundColor(colors.green)
   elseif savedColor == "blue" then
     term.setBackgroundColor(colors.blue)
   elseif savedColor == "black" then
     term.setBackgroundColor(colors.black)
   elseif savedColor == "gray" then
     term.setBackgroundColor(colors.gray)
   end
  end
  term.clear()
end

-- items
wel = "Welcome Player!"
local passFile = "password.txt"

-- Monitor
local monitor = peripheral.find("monitor")
if monitor then
    monitor.setBackgroundColor(colors.black)
    monitor.clear()
    monitor.setCursorPos(1,1)
    monitor.write("MineOS2 Signal")
end

-- MineOS
local running = true

-- start at first
os.setComputerLabel("2.6")
term.setCursorPos(1,1)
term.clear()
term.setTextColor(colors.yellow)
local stored = readPassword()
if stored then
    print("Enter password")
    term.setTextColor(colors.white)
    local entered = read("*")
    if entered ~= stored then
        print("Access denied")
    end
end
term.setTextColor(colors.yellow)
if fs.exists("nsave.txt") then
      local file = fs.open("nsave.txt", "r")
      local saved = file.readAll()
      file.close()
      print("Welcome " .. saved .. "!")
else
      print(wel)
end

local speaker = peripheral.find("speaker")
if speaker then
  speaker.playNote("pling", 1.0, 12)
  sleep(0.4)
  speaker.playNote("pling", 1.0, 10)
end
sleep(3)
term.clear()
term.setCursorPos(1,1)
print("MineOS2")

-- prompt
while running do

    -- detector
    term.setTextColor(colors.yellow)
    io.write("> ")
    term.setTextColor(colors.white)
    local input = read()
    local args = {}
    for word in string.gmatch(input, "[^%s]+") do
        table.insert(args, word)
    end

    local command = args[1]

-- commands

    if command == "about" then
        print("   _______    MineOS")
        print("  |   |   |   Version: 2.6")
        print("  | S | e |   Kernel: DEV2")
        print("  | O | n |   CCID: " .. os.getComputerID())
        print("  |   | i |   Uptime: " .. math.floor(os.clock()) .. "s")
        print("  | > | M |   CR: 2023 - 2025")
        if term.isColor() then
            print("              Color: true")
        else
            print("              Color: false")
        end

    elseif command == "help" then
        term.setTextColor(colors.orange)
        print("Help")
        term.setTextColor(colors.white)
        print("tipe 'plist' or 'mlist'")

        elseif command == "plist" then
        local dir = shell.dir()
        local files = fs.list(dir)
        for i, file in ipairs(files) do
            local fullPath = fs.combine(dir, file)
            local isStartupInRoot = (dir == "/" or dir == "") and file == "startup.lua"
            local isHidden = file:match("^%.")
            local isRom = file == "rom"
            if not isRom and not isStartupInRoot and not isHidden then
                if fs.isDir(fullPath) then
                    print("FO " .. file)
                else
                    print("FI " .. file)
                end
            end
        end

    elseif command == "hello" then
        term.clear()
        term.setCursorPos(1,1)
        term.setTextColor(colors.orange)
        textutils.slowPrint("Hello World!")
        sleep(3)
        term.clear()
        term.setCursorPos(1,1)

    elseif command == "pedit" then
     local filename = args[2]
     if filename then
      local lower = string.lower(filename)
      if lower == "startup" or lower == "startup.lua" then
       print("Warning you about to edit OS File")
       sleep(2)
       local prevBG = term.getBackgroundColor()
       shell.run("edit", "startup.lua")
       term.setBackgroundColor(prevBG)
       term.clear()
       term.setCursorPos(1, 1)
      elseif fs.isDir(filename) then
       print("Cannot edit folder")
      else
         local ok, err = pcall(function()
         local prevBG = term.getBackgroundColor()
         shell.run("edit", filename)
         term.setBackgroundColor(prevBG)
         term.clear()
         term.setCursorPos(1, 1)
      end)
      if not term.isColor() then
      term.clear()
      term.setCursorPos(1,1)
      else
       if not ok then print("Edit failed "..tostring(err)) end
       if ok and fs.exists("bsave.txt") then
        local f = fs.open("bsave.txt", "r")
        local saved = f.readAll()
        f.close()
        if colors[saved] then
         term.setBackgroundColor(colors[saved])
         term.clear()
         term.setCursorPos(1, 1)
        end
       end
      end
     end
    end

    elseif command == "popen" then
        local progName = args[2]
        if progName then
            local lower = string.lower(progName)
            if lower == "startup" or lower == "startup.lua" then
                print("Error opening that file")
            elseif shell.resolveProgram(progName) then
                print("Running " .. progName)
                shell.run(progName)
            else
                print("Unknown Program to open")
            end
        end

    elseif command == "mlist" then
      local lines = {
        "",
        "hello",
        "about",
        "shutoff",
        "popen <1>",
        "pedit <1>",
        "reboot",
        "cls",
        "shell",
        "cal <math>",
        "plist",
        "mlist",
        "pdelete <1>",
        "pir <ins/run>",
        "prename <1> <2>",
        "cd <1>",
        "mfolder <1>",
        "tcolor <help>",
        "cname <1>",
        "monitor <help> ",
        "time",
        "say <1>",
        "desktop"
      }

      local w, h = term.getSize()
      local line = 0
      line = 2
      for i = 2, #lines do
        print(lines[i])
        line = line + 1
        if line >= h then
            print("Press any key to continue...")
            os.pullEvent("key")
            term.clear()
            term.setCursorPos(1,1)
            line = 2
        end
      end

    elseif command == "shutoff" then
        term.clear()
        term.setCursorPos(1,1)
        print("Please Wait...")
        sleep(1)
        term.setCursorPos(1,1)
        term.setTextColor(colors.red)
        print("ShuttingOFF...")
        sleep(4)
        running = false
        os.shutdown()

    elseif command == "reboot" then
        term.clear()
        term.setCursorPos(1,1)
        print("Please Wait...")
        sleep(1)
        term.clear()
        term.setCursorPos(1,1)
        term.setTextColor(colors.red)
        print("Rebooting...")
        sleep(4)
        running = false
        os.reboot()

    elseif command == "cls" then
        term.clear()
        term.setCursorPos(1,1)

    elseif command == "shell" then
        term.setTextColor(colors.yellow)
        print("MineOS2")

    elseif command == "cal" then
        local expression = input:sub(5) -- everything after 'cal '
        local fn, err = load("return " .. expression)
        if fn then
            local ok, result = pcall(fn)
            if ok then
                print(result)
            else
                print("Error")
            end
        end

    elseif command == "pdelete" then
      local filename = args[2]

      if filename then
        filename = filename
        local currentDir = shell.dir()
        local fullPath = fs.combine(currentDir, filename)
        local lower = string.lower(filename)
        if currentDir == "" and (lower == "startup.lua" or lower == "startup") then
            print("Error deleting that file")
        elseif fs.exists(fullPath) then
            fs.delete(fullPath)
            print("Deleted " .. filename)
        else
            print("File not found " .. filename)
        end
      end

    elseif command == "pir" then
      local sub = args[2]
      local code = args[3]

      if sub == "run" and code then
        shell.run("pastebin", "run", code)

      elseif sub == "ins" and code then
        local saveAs = "pir_" .. code
        shell.run("pastebin", "get", code, saveAs)
        print("Installed as " .. saveAs)
      end

    elseif command == "prename" then
      local oldName = args[2]
      local newName = args[3]

      if not oldName or not newName then
      else
        oldName = oldName .. ".lua"
        newName = newName .. ".lua"
        local currentDir = shell.dir()
        local fullOldPath = fs.combine(currentDir, oldName)
        local fullNewPath = fs.combine(currentDir, newName)
        if currentDir == "" and (oldName == "startup.lua" or newName == "startup.lua") then
            print("Error renaming that file")
        elseif not fs.exists(fullOldPath) then
            print("Not exist" .. oldName)
        elseif fs.exists(fullNewPath) then
            print("Already exists " .. newName)
        else
            fs.move(fullOldPath, fullNewPath)
            print("Renamed " .. newName)
        end
      end

    elseif command == "cd" then
        local target = args[2]
        if target and fs.exists(target) and fs.isDir(target) then
            shell.setDir(target)
            print("Changed Dir " .. shell.dir())
        else
            print("Dir not found")
        end

    elseif command == "mfolder" then
          local folderName = args[2]
          if folderName then
            local currentDir = shell.dir()
            local fullPath = fs.combine(currentDir, folderName)
            if fs.exists(fullPath) then
              print("Folder exist")
            else
              fs.makeDir(fullPath)
              print("Created " .. folderName)
            end
          end

   elseif command == "tcolor" then
    if not term.isColor() then
     print("This computer cant work with colors")
    else
     local colorname = args[2]
     if colorname == "green" then
     term.setBackgroundColor(colors.green)
     term.clear()
     term.setCursorPos(1,1)
     local f = fs.open("bsave.txt", "w")
     f.write("green")
     f.close()
     elseif colorname == "blue" then
     term.setBackgroundColor(colors.blue)
     term.clear()
     term.setCursorPos(1,1)
     local f = fs.open("bsave.txt", "w")
     f.write("blue")
     f.close()
     elseif colorname == "black" then
     term.setBackgroundColor(colors.black)
     term.clear()
     term.setCursorPos(1,1)
     local f = fs.open("bsave.txt", "w")
     f.write("black")
     f.close()
     elseif colorname == "gray" then
     term.setBackgroundColor(colors.gray)
     term.clear()
     term.setCursorPos(1,1)
     local f = fs.open("bsave.txt", "w")
     f.write("gray")
     f.close()
     elseif colorname == "help" then
      print("Colors only that you can change")
      print("Blue/Gray/Black/Green")
     else
     print("Invalid color.")
     end
    end

   elseif command == "cname" then
    if args[2] then
      local file = fs.open("nsave.txt", "w")
      file.write(args[2])
      file.close()
      print("Name saved: " .. args[2])
    end

   elseif command == "say" then
    local message = input:match("^%S+%s+(.+)")
    if message then
      print(message)
    end
   elseif command == "time" then
       local current = os.date("%I:%M %p")
       print("time: " .. current)

   elseif command == "desktop" then
        term.setBackgroundColor(colors.black)
        shell.run("mde")

   elseif command == "monitor" then
    if not monitor then
        print("monitor didint detected")
    end

    if monitor then
        local moch = args[2]
        local coch = args[3]

        if moch == "clear" then
            monitor.clear()

        elseif moch == "help" then
            print("color")
            print("clear")
            print("help")
            print("say <1>")

        elseif moch == "color" then
            if not monitor.isColor() then
                print("Monitor not support colors")
            else
                if coch == "blue" then
                    monitor.setBackgroundColor(colors.blue)
                    monitor.clear()
                    print("changed color blue")
                elseif coch == "gray" then
                    monitor.setBackgroundColor(colors.gray)
                    monitor.clear()
                    print("changed color gray")
                elseif coch == "black" then
                    monitor.setBackgroundColor(colors.black)
                    monitor.clear()
                    print("changed color black")
                elseif coch == "green" then
                    monitor.setBackgroundColor(colors.green)
                    monitor.clear()
                    print("changed color green")
                elseif coch == "help" then
                    print("colors that you can change")
                    print("blue/gray/black/green")
                else
                    print("Unknown color")
                end
            end

        elseif moch == "say" then
            local messageParts = {}
            for i = 3, #args do
                table.insert(messageParts, args[i])
            end
            local message = table.concat(messageParts, " ")

            monitor.setCursorPos(1, 1)
            monitor.clear()
            monitor.write(message)
        end
    end
   else
        print("Unknown MProgram to open")
   end
end