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# GDB Commands

There is a big list of GDB commands but following commands are among the more useful gdb commands:

- b main - Put a breakpoint at the beginning of the program
- b - Put a breakpoint at the current line
- b N - Put a breakpoint at line N
- b +N - Put a breakpoint N lines down from the current line
- b fn - Put a breakpoint at the beginning of function "fn"
- d N - delete breakpoint number N
- info break - list breakpoints
- r - Run the program until a breakpoint or error
- c - continue running the program until the next breakpoint or error
- f - Run until the current function is finished
- s - run the next line of the program
- s N - run the next N lines of the program
- n - like s, but don't step into functions
- u N - run until you get N lines in front of the current line
- p var - print the current value of the variable "var"
- bt - print a stack trace
- u - go up a level in the stack
- d - go down a level in the stack
- q - Quit gdb

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