Bash Configuration Files: Difference between revisions
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* [[Bash#Subjects|bash]] | * [[Bash#Subjects|bash]] | ||
* [[PATH]] | |||
=Overview= | =Overview= | ||
This article describes how bash executes its startup files. If any of the files exist, but cannot be read, bash reports an error. | This article describes how bash executes its startup files. If any of the files exist, but cannot be read, bash reports an error. | ||
=Interactive Login Shell= | =Interactive Login Shell= | ||
This sequence is executed by an interactive login shell, or a shell that was invoked with <code>--login</code>: | This sequence is executed by an interactive login shell, or a shell that was invoked with <code>--login</code>: | ||
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│ | │ | ||
│ | │ | ||
└─→ ~/.bash_profile ─→ ~/.bash_login ─→ ~/.profile | └─→ ~/.bash_profile ─→ ~/.bash_login ─→ ~/.profile <font color=teal># executes the first one that exists and it is readable</font> | ||
</font> | |||
<font color=darkgray>When more than one of <code>~/.bash_profile</code>, <code>~/.bash_login</code> or <code>~/.profile</code> exists and it is readable, the first one, in this order, is executed.</font> | |||
<font size=-1> | |||
~/[[.bashrc]] | |||
</font> | |||
<font color=darkkhaki>TODO: | |||
* https://www.gnu.org/software/bash/manual/html_node/Bash-Startup-Files.html | |||
* https://stackoverflow.com/a/26962251 | |||
</font> | </font> | ||
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=Invoked by Remote Shell Daemon= | =Invoked by Remote Shell Daemon= | ||
=Invoked with Unequal Effective and Real UID/GIDs= | =Invoked with Unequal Effective and Real UID/GIDs= | ||
=Setting Configuration for all Users, Including <tt>root</tt>= | |||
To set up shell configuration system-wide, either update <code>[[/etc/profile]]</code> or add a specialized <code>/etc/profile./d/*.sh</code> file, which is automatically executed when <code>[[/etc/profile]]</code> is evaluated. | |||
<font color=darkkhaki> | |||
Found this comment in <code>/etc/profile</code>: | |||
<syntaxhighlight lang='text'> | |||
# Bash login shells run only /etc/profile | |||
# Bash non-login shells run only /etc/bashrc | |||
</syntaxhighlight> | |||
</font> | |||
Latest revision as of 06:57, 4 May 2022
External
- https://www.gnu.org/software/bash/manual/html_node/Bash-Startup-Files.html
- https://bencane.com/2013/09/16/understanding-a-little-more-about-etcprofile-and-etcbashrc/
Internal
Overview
This article describes how bash executes its startup files. If any of the files exist, but cannot be read, bash reports an error.
Interactive Login Shell
This sequence is executed by an interactive login shell, or a shell that was invoked with --login:
├─→ /etc/profile ─→ /etc/profile.d/*.sh │ │ └─→ ~/.bash_profile ─→ ~/.bash_login ─→ ~/.profile # executes the first one that exists and it is readable
When more than one of ~/.bash_profile, ~/.bash_login or ~/.profile exists and it is readable, the first one, in this order, is executed.
~/.bashrc
TODO:
- https://www.gnu.org/software/bash/manual/html_node/Bash-Startup-Files.html
- https://stackoverflow.com/a/26962251
Interactive Non-Login Shell
Non-Interactive Shell
Invoked with the name "sh"
Invoked by Remote Shell Daemon
Invoked with Unequal Effective and Real UID/GIDs
Setting Configuration for all Users, Including root
To set up shell configuration system-wide, either update /etc/profile or add a specialized /etc/profile./d/*.sh file, which is automatically executed when /etc/profile is evaluated.
Found this comment in /etc/profile:
# Bash login shells run only /etc/profile
# Bash non-login shells run only /etc/bashrc