Changing your bash prompt
Depending on your UNIX system, by default you might see as your prompt just a dollar sign ($) or perhaps a dollar sign and date, or other information as outlined in the Setting your bash prompt promptly sidebar. You can set your prompt to include information that's handy for you.
You actually have multiple prompts in bash:
The main prompt that you usually think of as the shell prompt. This prompt is called PS1.
A secondary prompt that you see when the system requires additional information to complete a command. Logically, this prompt is called PS2.
You can change either of these prompts using the following steps. You start by finding your prompt statement (Code Listing 8.8), then modify it in your editor (Figure 8.2 ...
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