gdb

Debugger (GNU)

Syntax:

gdb_variant [options] [executable] [ core_file | pid ]

gdb_variant [options] --args executable [ inferior-arguments ...]

where gdb_variant depends on the target platform, as follows:

Linux, Mac, Microsoft Windows

Invoke the GNU Debugger by running gdb. Once started, gdb reads commands from the terminal until you tell it to exit.

The QNX Neutrino implementation of GDB includes some extensions:

target qnx com_port_specifier | host:port: Specify the target to use.
Note: The devc-pty manager must be running on the machine that's running pdebug, and a ptyp/ttyp pair must be available.
set nto-inherit-env value: Set where the remote process inherits its environment from. If value is 0, the process inherits its environment from GDB. If value is 1 (the default), the process inherits its environment from pdebug.
set nto-cwd path: Specify the remote process's working directory. You should do this before starting your program.
set nto-stop-on-thread-events stop: Stop on thread events. When stop is 1, gdb stops on thread created and thread destroyed events. The default is 0 (disabled).
set nto-timeout time: If your communication line is slow, you might need to set the timeout for remote reads; time is the timeout, in seconds. The default is 10 seconds.
upload local_path remote_path: Send a file to a remote target system.
download remote_path local_path: Retrieve a file from a remote target system.
info pidlist: Display a list of processes and their process IDs on the remote system.
info meminfo: Display a list of memory-region mappings (shared objects) for the current process being debugged.

GNU