我无意中重命名了 /usr/bin 中的文件，不知道它以前的名字。当前名称是“[”。我怎样才能找到它以前的名字？
$ objdump -x '/usr/bin/['
/usr/bin/[: file format elf64-x86-64
/usr/bin/[
architecture: i386:x86-64, flags 0x00000150:
HAS_SYMS, DYNAMIC, D_PAGED
start address 0x0000000000002c20
Program Header:
PHDR off 0x0000000000000040 vaddr 0x0000000000000040 paddr 0x0000000000000040 align 2**3
filesz 0x00000000000002d8 memsz 0x00000000000002d8 flags r--
INTERP off 0x0000000000000318 vaddr 0x0000000000000318 paddr 0x0000000000000318 align 2**0
filesz 0x000000000000001c memsz 0x000000000000001c flags r--
LOAD off 0x0000000000000000 vaddr 0x0000000000000000 paddr 0x0000000000000000 align 2**12
filesz 0x00000000000012e8 memsz 0x00000000000012e8 flags r--
LOAD off 0x0000000000002000 vaddr 0x0000000000002000 paddr 0x0000000000002000 align 2**12
filesz 0x00000000000069c6 memsz 0x00000000000069c6 flags r-x
LOAD off 0x0000000000009000 vaddr 0x0000000000009000 paddr 0x0000000000009000 align 2**12
filesz 0x00000000000021d8 memsz 0x00000000000021d8 flags r--
LOAD off 0x000000000000bc50 vaddr 0x000000000000cc50 paddr 0x000000000000cc50 align 2**12
filesz 0x0000000000000448 memsz 0x0000000000000588 flags rw-
DYNAMIC off 0x000000000000bc70 vaddr 0x000000000000cc70 paddr 0x000000000000cc70 align 2**3
filesz 0x00000000000001b0 memsz 0x00000000000001b0 flags rw-
NOTE off 0x0000000000000338 vaddr 0x0000000000000338 paddr 0x0000000000000338 align 2**3
filesz 0x0000000000000030 memsz 0x0000000000000030 flags r--
NOTE off 0x0000000000000368 vaddr 0x0000000000000368 paddr 0x0000000000000368 align 2**2
filesz 0x0000000000000044 memsz 0x0000000000000044 flags r--
0x6474e553 off 0x0000000000000338 vaddr 0x0000000000000338 paddr 0x0000000000000338 align 2**3
filesz 0x0000000000000030 memsz 0x0000000000000030 flags r--
EH_FRAME off 0x000000000000aa70 vaddr 0x000000000000aa70 paddr 0x000000000000aa70 align 2**2
filesz 0x000000000000010c memsz 0x000000000000010c flags r--
STACK off 0x0000000000000000 vaddr 0x0000000000000000 paddr 0x0000000000000000 align 2**4
filesz 0x0000000000000000 memsz 0x0000000000000000 flags rw-
RELRO off 0x000000000000bc50 vaddr 0x000000000000cc50 paddr 0x000000000000cc50 align 2**0
filesz 0x00000000000003b0 memsz 0x00000000000003b0 flags r--
Dynamic Section:
NEEDED libc.so.6
INIT 0x0000000000002000
FINI 0x00000000000089b4
GNU_HASH 0x00000000000003b0
STRTAB 0x0000000000000978
SYMTAB 0x00000000000003d8
STRSZ 0x00000000000002d5
SYMENT 0x0000000000000018
DEBUG 0x0000000000000000
PLTGOT 0x000000000000ce20
PLTRELSZ 0x0000000000000480
PLTREL 0x0000000000000007
JMPREL 0x0000000000000e68
RELA 0x0000000000000d48
RELASZ 0x0000000000000120
RELAENT 0x0000000000000018
FLAGS 0x0000000000000008
FLAGS_1 0x0000000008000001
VERNEED 0x0000000000000cc8
VERNEEDNUM 0x0000000000000001
VERSYM 0x0000000000000c4e
RELACOUNT 0x0000000000000003
Version References:
required from libc.so.6:
0x0d696913 0x00 08 GLIBC_2.3
0x06969194 0x00 07 GLIBC_2.14
0x069691b3 0x00 06 GLIBC_2.33
0x0d696914 0x00 05 GLIBC_2.4
0x069691b4 0x00 04 GLIBC_2.34
0x09691974 0x00 03 GLIBC_2.3.4
0x09691a75 0x00 02 GLIBC_2.2.5
Sections:
Idx Name Size VMA LMA File off Algn
0 .interp 0000001c 0000000000000318 0000000000000318 00000318 2**0
CONTENTS, ALLOC, LOAD, READONLY, DATA
1 .note.gnu.property 00000030 0000000000000338 0000000000000338 00000338 2**3
CONTENTS, ALLOC, LOAD, READONLY, DATA
2 .note.gnu.build-id 00000024 0000000000000368 0000000000000368 00000368 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA
3 .note.ABI-tag 00000020 000000000000038c 000000000000038c 0000038c 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA
4 .gnu.hash 00000024 00000000000003b0 00000000000003b0 000003b0 2**3
CONTENTS, ALLOC, LOAD, READONLY, DATA
5 .dynsym 000005a0 00000000000003d8 00000000000003d8 000003d8 2**3
CONTENTS, ALLOC, LOAD, READONLY, DATA
6 .dynstr 000002d5 0000000000000978 0000000000000978 00000978 2**0
CONTENTS, ALLOC, LOAD, READONLY, DATA
7 .gnu.version 00000078 0000000000000c4e 0000000000000c4e 00000c4e 2**1
CONTENTS, ALLOC, LOAD, READONLY, DATA
8 .gnu.version_r 00000080 0000000000000cc8 0000000000000cc8 00000cc8 2**3
CONTENTS, ALLOC, LOAD, READONLY, DATA
9 .rela.dyn 00000120 0000000000000d48 0000000000000d48 00000d48 2**3
CONTENTS, ALLOC, LOAD, READONLY, DATA
10 .rela.plt 00000480 0000000000000e68 0000000000000e68 00000e68 2**3
CONTENTS, ALLOC, LOAD, READONLY, DATA
11 .init 00000025 0000000000002000 0000000000002000 00002000 2**2
CONTENTS, ALLOC, LOAD, READONLY, CODE
12 .plt 00000310 0000000000002030 0000000000002030 00002030 2**4
CONTENTS, ALLOC, LOAD, READONLY, CODE
13 .plt.got 00000010 0000000000002340 0000000000002340 00002340 2**4
CONTENTS, ALLOC, LOAD, READONLY, CODE
14 .plt.sec 00000300 0000000000002350 0000000000002350 00002350 2**4
CONTENTS, ALLOC, LOAD, READONLY, CODE
15 .text 00006361 0000000000002650 0000000000002650 00002650 2**4
CONTENTS, ALLOC, LOAD, READONLY, CODE
16 .fini 00000012 00000000000089b4 00000000000089b4 000089b4 2**2
CONTENTS, ALLOC, LOAD, READONLY, CODE
17 .rodata 00001a6f 0000000000009000 0000000000009000 00009000 2**5
CONTENTS, ALLOC, LOAD, READONLY, DATA
18 .eh_frame_hdr 0000010c 000000000000aa70 000000000000aa70 0000aa70 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA
19 .eh_frame 00000658 000000000000ab80 000000000000ab80 0000ab80 2**3
CONTENTS, ALLOC, LOAD, READONLY, DATA
20 .ctors 00000010 000000000000cc50 000000000000cc50 0000bc50 2**3
CONTENTS, ALLOC, LOAD, DATA
21 .dtors 00000010 000000000000cc60 000000000000cc60 0000bc60 2**3
CONTENTS, ALLOC, LOAD, DATA
22 .dynamic 000001b0 000000000000cc70 000000000000cc70 0000bc70 2**3
CONTENTS, ALLOC, LOAD, DATA
23 .got 000001e0 000000000000ce20 000000000000ce20 0000be20 2**3
CONTENTS, ALLOC, LOAD, DATA
24 .data 00000098 000000000000d000 000000000000d000 0000c000 2**5
CONTENTS, ALLOC, LOAD, DATA
25 .bss 00000138 000000000000d0a0 000000000000d0a0 0000c098 2**5
ALLOC
26 .gnu_debugaltlink 00000049 0000000000000000 0000000000000000 0000c098 2**0
CONTENTS, READONLY
27 .gnu_debuglink 00000034 0000000000000000 0000000000000000 0000c0e4 2**2
CONTENTS, READONLY
SYMBOL TABLE:
no symbols