saving variable

door1 = "open"

-- lets write it to a file
file = fs.open("myConfigFile", "w") -- 'w' for write mode
file.write(door1)
file.close() -- always close a file handle

-- lets read it from a file
file = fs.open("myConfigFile", "r") -- 'r' for read mode
door1 = file.readLine()
file.close()

print("The door is currently " .. door1)