User`s guide

Chapter 3: Examining Source Files

For example, consider debugging a program called look in /usr/local/bin, the

source for which resides in /usr/local/src/look.c. To debug this program, you

can invoke dbx from the /usr/local/bin directory by entering:

% dbx -I /usr/local/src look

Specifying Source Directories With

dbx

Commands

The dir and use commands allow you to specify a source directory list while

dbx is running.

dir [dir ...] If you provide one or more directories, dbx adds those

directories to the end of the source directory list.

If you do not provide any directories, dbx displays the

current source directory list.

use [dir ...] If you provide one or more directories, dbx replaces the

source directory list with the directories that you provide.

If you do not provide any options, dbx displays the current

source directory list.

Note: Both the dir and use commands recognize absolute and relative

pathnames (for example, ../src); however, they do not recognize C shell tilde

(~) syntax (for example, ~kim/src) or environment variables (for example,

$HOME/src).

Examples of

dir

and

use

Let’s debug the look program in /usr/local/bin. Recall that the source resides

in /usr/local/src/look.c. If you invoke dbx from the /usr/local/bin directory

without specifying /usr/local/src as a source directory, it will not initially

appear in the directory list:

(dbx) dir

However, you can add /usr/local/src with the dir command by entering:

(dbx) dir /usr/local/src

(dbx) dir

. /usr/local/src