set disassembly-flavor intel
disas 0xaddress
disas main

x -> examine
x/6i 0xaddress   disas @ addr
x/3x 0xaddress   examine word @ addr
x/bx b ->bytesa
x/5wx w -> words
x/q ?? (64-bit?)

p -> print (fancy)
i reg -> info registers
i reg eax -> i reg eax

display/i $pc   -> disassembles after every execution
display/x $eax  ; etc
;;;
breakpoints

break *0xaddress
tbreak *0xaddress  ; temporary breakpoint
r(un)              ; start the program
c                  ; continue

;;;;
Get the entry point
i file
readelf -h binary  | grep Entry
objdump -d file >> code.txt