function initShell()
    term.clear()
    term.setCursorPos(1,1)
	term.setTextColor(colors.red)
	print("J:OS Shell 1.0")
end
function shell_CMD()
    term.setTextColor(colors.orange)
	local machine = os.getComputerLabel()
	if (machine == nil) then
	  os.setComputerLabel(jsof.getId())
	  machine = os.getComputerLabel()
	end
    write(machine..".local@j-os:/"..shell.dir().."$ ")
    term.setTextColor(colors.yellow)
    input = read()
	banned_cmds = {
	  "rm startup",
	  "rm start.scr",
	  "rm key",
	  "rm rom-3",
	  "rm ASSETS",
	  "rm apis",
	  "rm loginkeys",
	  "rm os",
	  "rm rom",
	  "edit startup",
	  "edit start.scr",
	  "edit key",
	  "cd rom-3",
	  "cd ASSETS",
	  "cd apis",
	  "cd os",
	  "cd rom",
	  "multishell",
	  "cd sys",
	  "rm sys"
	}
    isbanned = false
	for i=1,#banned_cmds do
		if (input == banned_cmds[i]) then
		  isbanned = true
		  term.setTextColor(colors.red)
		  print("Error: That file is locked!")
		else
		end
	end
	if (isbanned == false) then
	  shell.run(input)
	end
end
initShell()
while true do
    shell_CMD()
end