linux中bash配置文件的读取执行顺序

全文摘自man bash中对执行流程的注释，并在其中加入自己的理解

登录shell与交互shell

A login shell is one whose first character of argument zero is a -, or one started with the --login option. 通俗点说就是：是不是用来登录用的。

An interactive shell is one started without non-option arguments (unless -s is specified) and  without  the  -c  option whose standard input and error are both connected to terminals (as determined by isatty(3)), or one started with the -i option.  PS1 is set and $- includes i if bash is interactive, allowing a shell script or a startup file  to  test  this state. 通俗点说就是：是不是用来交互的，即是不是你给个输入，它给个输出

读取配置流程

黑窗口登录或图形界面登录

When  bash  is  invoked  as an interactive login shell, or as a non-interactive shell with the --login option, it first reads and executes commands from the file /etc/profile, if that file exists.  After reading that  file,  it  looks  for  ~/.bash_profile,  ~/.bash_login, and ~/.profile, in that order, and reads and executes commands from the first one that exists and is readable.  The --noprofile option may be used when the shell is started to inhibit this behavior.

用户登出

When an interactive login shell exits, or a non-interactive login shell executes the exit builtin command,  bash  reads and executes commands from the file ~/.bash_logout, if it exists.

登录后开启一个terminal

When  an interactive shell that is not a login shell is started, bash reads and executes commands from /etc/bash.bashrc and ~/.bashrc, if these files exist.  This may be inhibited by using the --norcoption.  The --rcfile file option  will force bash to read and execute commands from file instead of /etc/bash.bashrc and ~/.bashrc.

关于zsh

感觉与bash类似

来源

暂时找不到linux下的截图了，可喜的是他们内容一样。