Killing the process being debugged

This command is useful if you wish to debug a core dump instead of a running process. GDB ignores any core dump file while your program is running.

kill
Kill the process being debugged.

The kill command is also useful if you wish to recompile and relink your program. With QNX Neutrino, it's possible to modify an executable file while it's running in a process. If you want to run the new version, kill the current process; when you next type run, GDB notices that the file has changed, and reads the symbol table again (while trying to preserve your current breakpoint settings).