Shell Foundation-environment variable configuration file

Shell Foundation-environment variable configuration file

Source configuration file or. Configuration file:

After the environment variable is written to the configuration file, the user needs to re-login to take effect, but with the source command, it can directly take effect

Main configuration files:

/etc/profile

/etc/profile.d/*.sh

~/.bash_profile

~/.bashrc

/etc/bashrc

Where/ETC/PROFILE/ETC/PROFILE.D/*.SH/ETC/BASHRC is valid for all users

~/.bash_profile ~/.BASHRC only valid for current user

environment variable configuration file invocation order

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The role of configuration file/etc/profile

User variable

LogName variable

Mail variables

PATA variable

Hostname variable

Histsize variable

Umask

Calling the/etc/profile.d/*.sh file

The role of configuration file ~/.bash_profile

Calling the ~/.BASHRC file

After the path variable, add ": $HOME/bin" to this directory

Shell Login Information

Local terminal welcome information:/etc/issue

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Remote Login information file (the above escape character cannot be used for this folder, only plain text information is written):/etc/issue.net

Whether this welcome message is displayed is determined by the SSH configuration file,/etc/ssh/sshd_config, to the "banner/etc/issue.net" line to display, and to restart the SSH service

Post-logon welcome information for both remote and local:/ETC/MOTD

Shell Foundation-environment variable configuration file