ComputerCraft AntiVirus

function scan(path)
	files = fs.list(path)
	for n=1,#files do
		if fs.isReadOnly(path.. "/" ..files[n]) then else
			if fs.isDir(path.. "/" ..files[n]) then
				scan(path.. "/" ..files[n])
			else
				local tLines = {}
				local file = io.open(path.. "/" ..files[n], "r")
				local line
				while true do
					line = file:read()
					if not line then break end
					tLines[#tLines+1] = line
				end
				file:close()

				for i = 1,#tLines do
					if string.find(tLines[i], "os.shutdown()") then
						print(files[n].. "(Line #" ..i..") = Possible Shutdown Virus")
					elseif string.find(tLines[i], "os.reboot()") then
						print(files[n].. "(Line #" ..i..") = Possible Reboot Virus")
					end
				end
			end
		end
	end
end

scan("/")