gdb.txt

Allow Ctrl-C passthrough to the process being debugged:
handle SIGINT pass

Ignore SIG35
handle SIG35 noprint nostop

Show all handles
info handle

Print IPv4 value:
p (char*)inet_ntoa(&my_ip4_addr)

Print IPv6 value:
p (void*)malloc(64)
p (char*)inet_ntop(10,&my_ip6_addr,$1,64)

Force printing in hexadecimal (some other printf() formatters can be used as
well):
p/x

Continue till the end of function:
finish

Print type of variable or struct:
ptype struct sockaddr_in

See backtrace of all threads:
thread apply all bt

Switch frame in a backtrace (especially useful for examining core files)
frame <frame #>

Switch to n frames above and below respectively
up <n>
down <n>

List local variables
info locals

''See also:'' [http://beej.us/guide/bggdb/](Beej's Quick Guide to GDB)