“[0;31m”是什么意思?

What does "[0;31m" means?

我在很多地方看到这个字符串,但它是什么意思?

例如:https://github.com/ibnYusrat/my-linux-setup/blob/master/setup.sh

example in github

这是一个ANSI escape sequence. It's mainly used to colorize/format your shell's standard out. Please find a list of valid sequences here
关于此线程的标题 --> 3[0;31m 开始将输出着色为红色。请注意,您必须使用 3[0m.
重置您的序列 见附例: