GDB

1. GDB manual

   Index to the GDB manual.

2. Running programs

   run, attach, args, environment and starting the inferior.

3. Breakpoints

   Breakpoints, watchpoints, catchpoints.

4. Examining the stack

   backtrace, frame, up and down.

5. Examining data

   print, x, display and format specifiers.

6. Threads

   info threads, thread apply and scheduler locking.

7. Remote debugging

   gdbserver, target remote and stubs.

8. Python API

   Scripting GDB with the gdb module and pretty-printers.

9. Reverse execution

   record, reverse-step and reverse-continue.

10. Source files

    list, search and source path.

11. TUI

    Text user interface layouts.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.