bash配置文件

Bash相关的配置文件:

• /etc/profile: The systemwide initialization file, executed for login shells
• /etc/bash.bashrc: The systemwide per-interactive-shell startup file
• /etc/bash.bash.logout: The systemwide login shell cleanup file, executed when a login shell exits
• ~/.bash_profile: The personal initialization file, executed for login shells
• ~/.bashrc: The individual per-interactive-shell startup file
• ~/.bash_logout: The individual login shell cleanup file, executed when a login shell exits
• ~/.inputrc: Individual readline initialization file

关于这些配置文件加载详细说明，参见GNU Bash文档: Bash-Startup-Files

关于Bash启动时加载的配置文件顺序，参见: https://shreevatsa.wordpress.com/2008/03/30/zshbash-startup-files-loading-order-bashrc-zshrc-etc/

几个常用的变量:

• SEHLL: 显示当前的Shell
• PATH: 不加绝对路径时,查找命令的路径
• USER: 显示当前用户
• PWD: pwd命令显示的东西
• HISTFILESIZE: history记录多少条历史命令
• PS1-4: 交互登录式Shell的命令提示符