块大小
[0xB7F9D810]> b?
| Usage: b[f] [arg]
| Get/Set block size
| b 33 set block size to 33
| b eip+4 numeric argument can be an expression
| b display current block size
| b+3 increase blocksize by 3
| b-16 decrease blocksize by 16
| b* display current block size in r2 command
| bf foo set block size to flag size
| bj display block size information in JSON
| bm 1M set max block size[0x00000000]> b 0x100 ; block size = 0x100
[0x00000000]> b+16 ; ... = 0x110
[0x00000000]> b-32 ; ... = 0xf0[0x00000000]> bf sym.main ; block size = sizeof(sym.main)
[0x00000000]> pd @ sym.main ; disassemble sym.main
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