|Debugging with GDB: Logging Output|
You may want to save the output of GDB commands to a file. There are several commands to control GDB’s logging.
set logging on
set logging off
set logging file file
Change the name of the current logfile. The default logfile is gdb.txt.
set logging overwrite [on|off]
By default, GDB will append to the logfile. Set
set logging on to overwrite the logfile instead.
set logging redirect [on|off]
Show the current values of the logging settings.