Tip: to get more of a glow, you can duplicate some of the blurred line layers.
小技巧：为了加强发光效果，你可以复制某些模糊化的线层。
2
Populating a file like this by hand runs the risk of inadvertently creating duplicate IP addresses or host names, so this is a good example of using the built-in command line to eliminate user errors.
手动填充这样的文件有可能会创建重复的 IP 地址或主机名，因此这是使用内置命令行消除用户错误的好例子。
3
The first line removes consecutive duplicate commands from your shell history.