The gdb debugger on a page
	Wed Mar  7 11:19:40 EST 2001


$ g++ -g whatever.c	(or gcc -g whatever.c)

$ gdb a.out [core]

        run [args]
        bt              stack backtrace ("where" is synonym)
        break [file:]function
        print expr
	run [args]	start it running, with optional commandline arguments
        c       	continue after stopping
        n[ext]  	next line, stepping over functions
        s[tep]  	next line, stepping into functions
        list <line#>
	up		move up in call stack (towards main)
	down		move down in call stack
        help
        info
        quit

e.g., to see where a program died,

	gdb a.out core
	where
	...

e.g., to run a program from gdb,
        gdb a.out
        break main      (or break hello.c:main)
	run
        n
        n
        s
	print i
	print v[i]
        ...