Linux Shell

Shell Environments

Linux shell is made up of components that can be customized to the user’s preference using:

Shell Variables and settings

Global Profiles (All Users)

When invoked interactively with the –login option or when invoked as sh, Bash reads the /etc/profile instructions.

/etc/profile



/etc/profile.d/*.sh the /etc/profile.d directory, which contains files configuring system-wide behavior of specific programs.
/etc/profile.local

etc/bashrc contains system-wide definitions for shell functions and aliases.

/etc/bash.bashrc



/etc/bash_completion.d/*.sh
/etc/bash.bashrc.local

These files might not be in your home directory by default; create them if needed.

User specific profiles



~/.profile
~/.bashrc
~/.alias

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