关于login shell和non-login shell[已解决]

imzhangliang

Invoked as an interactive login shell, or with --login
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.

When a login shell exits, Bash reads and executes commands from the file ~/.bash_logout, if it exists.

Invoked as an interactive non-login shell
When an interactive shell that is not a login shell is started, Bash reads and executes commands from ~/.bashrc, if that file exists. This may be inhibited by using the --norc option. The --rcfile file option will force Bash to read and execute commands from file instead of ~/.bashrc.

So, typically, your ~/.bash_profile contains the line

     if [ -f ~/.bashrc ]; then . ~/.bashrc; fi

after (or before) any login-specific initializations.



以上是manual对于bash的描述中的一段。其中讲到当bash是作为login shell时，执行/etc/profile然后是~/.bash_profile, ~/.bash_login, 和 ~/.profile的存在的第一个。但是事实上之后也会执行~/.bashrc，就是事实上无论是login shell和non-login shell都会执行~/.bashrc，即使.bash_profile里没有" if [ -f ~/.bashrc ]; then . ~/.bashrc; fi "这一段。



我的问题是：

为什么login shell的描述中不写之后会执行.bashrc呢？可能是我没有理解手册的意思。大家说说意见！

d00m3d

并不是每个发行版的 bash_profile 的写法都相同的，有些会引入 bashrc，有些则不会！

imzhangliang

哦，是这样啊，明白了

sally2021

如何识别linux中用的是硬件狗还是软件狗