Bash is the default shell on many Linux and Unix systems. When a user logs in, the system reads the user's bash profile to set up the user's environment and configure the shell.
To change a user's bash profile, you will need to edit the user's bash profile file. The bash profile file is usually located in the user's home directory and is named .bashrc.
To edit the bash profile file, you can use a text editor such as vi or nano. For example:
nano ~/.bashrc
This will open the bash profile file in the nano text editor. You can then edit the file as needed and save your changes by pressing Ctrl + O and then Enter.
The bash profile file typically contains shell commands and settings that are executed when the user logs in. You can add or modify these commands and settings as needed.
For example, you can set the default editor by adding the following line to the bash profile file:
export EDITOR=nano
This will set the default editor to nano for the user.
You can also add aliases for commonly used commands, or set environment variables such as PATH or HOME.
Once you have made your changes to the bash profile file, you will need to log out and log back in for the changes to take effect.