The description below is from the book DOS the
Easy Way by Everett Murdock Ph.D.
for information about downloading the book.
Type: Internal (2.0 and later)
PROMPT [prompt text][options ]
Purpose: Changes the DOS command prompt.
You can change the DOS prompt (the indicator that DOS is ready for input)
almost any type of special prompt you want. For example, you can use
command to make the prompt display the current time, the date, or the
directory. You can also use combinations of the special prompt
create custom prompts.
For more information about the many uses of the PROMPT command, see Chapter 6,
Tips for Advanced Users, in the downloadable book
DOS the Easy Way.
If you use the PROMPT command with no options , the prompt will be set to
default prompt (the current drive letter and a greater-than symbol). By
the characters indicated in the following list, you can create a great
of prompts (each must be preceded by a dollar sign):
To change the prompt to display the current drive and directory and a
greater-than symbol, enter
You can also create more complicated prompts. For example, to use the
prompt as above, with two added spaces and the characters TIME= followed
display of the current time, enter
prompt $p$g TIME=$t
The resulting prompt (if you are working in the DOS directory on drive C)
look like this: