9.2. Editing source files
To edit the lines in a source file, use the edit command.
The editing program of your choice
is invoked with the current line set to
the active line in the program.
Alternatively, there are several ways to specify what part of the file you
want to print if you want to see other parts of the program.
Here are the forms of the edit command most commonly used:
Edit the current source file at the active line number in the program.
- edit number
Edit the current source file with number as the active line number.
- edit function
Edit the file containing function at the beginning of its definition.
- edit filename:number
Specifies line number in the source file filename.
- edit filename:function
Specifies the line that begins the body of the
function function in the file filename. You only need the
file name with a function name to avoid ambiguity when there are
identically named functions in different source files.
- edit *address
Specifies the line containing the program address address.
address may be any expression.
9.2.1. Choosing your editor
You can customize gdb to use any editor you want
. By default, it is /bin/ex, but you can change this
by setting the environment variable EDITOR before using
gdb. For example, to configure gdb to use the
vi editor, you could use these commands with the sh shell:
or in the csh
setenv EDITOR /usr/bin/vi