Introduce the .bashrc file and how to configure and use it

Introduce the difference between profile, bashrc, and bash_profile files in Linux

Different operating modes of Bash: the difference between login shell and non-login shell, interactive shell and non-interactive shell

Pulling the U disk directly does not necessarily damage the U disk

Configure the ssh key and add it to github to help us submit or clone code through git without the tedious verification process and simplify the operation process

Load Github resources through jsDelivr to optimize website speed.