I just started with Charlie Miller and Dino Dai Zovi's Mac Hacker's Handbook and was doing the tutorials. This includes getting to know things like 'otool'
otool -f \bin\ls Fat headers fat_magic 0xcafebabe nfat_arch 2 architecture 0 cputype 16777223 cpusubtype 3 capabilities 0x80 offset 4096 size 39600 align 2^12 (4096) architecture 1 cputype 7 cpusubtype 3 capabilities 0x0 offset 45056 size 35632 align 2^12 (4096)
I tried to find something about that first
cputype in /usr/include/mach/machine.h, but found nothing. Clearly I am missing something.