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, you can give a line
specification to specify what part of the file you want to print if
you want to see other parts of the program.
You can customize to use any editor you want by using the
EDITOR
environment variable. The only restriction is that your
editor (say ex
), recognizes the following command-line syntax:
ex +number file
The optional numeric value +number specifies the number of the
line in the file where to start editing. For example, to configure
the BASH debugger to use the vi
editor, you could use these commands
with the sh
shell:
EDITOR=/usr/bin/vi export EDITOR gdb ...
or in the csh
shell,
setenv EDITOR /usr/bin/vi gdb ...
edit [line specification]
¶Edit line specification using the editor specified by the
EDITOR
environment variable.