To customize your bash prompt to show only the relative path from your home directory (i.e., a/b instead of the full path /home/USER/a/b), you can modify your PS1 environment variable in your .bashrc or .bash_profile file.

Here’s how you can do it:

Step 1: Edit your .bashrc file

Open your .bashrc file in a text editor:

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nano ~/.bashrc

Step 2: Add or modify the PS1 variable

Add or modify the following line to set your prompt to show the relative path:

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PS1='[\u@\h \W]\$ '

• \W displays the basename of the current directory (i.e., the last part of the path).
• If you want to show the full relative path (e.g., a/b), use \w instead of \W:

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PS1='[\u@\h \w]\$ '

Step 3: Reload your .bashrc

After saving the file, reload it to apply the changes:

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source ~/.bashrc

Result

Your prompt will now show the relative path from your home directory, like this:

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[USER@HOSTNAME a/b]$

This way, you’ll always see the path relative to your home directory, making it easier to navigate and understand your current location.