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# Reloc
Replace strings in binary executables and data files.
## System Requirements
* `gcc`
* _or_ `clang`
* _or_ Microsoft Visual Studio (`cl.exe`)
* `>=cmake-2.18.11`
## Installing
### Linux / MacOS
```bash
$ git clone https://github.com/jhunkeler/reloc
$ mkdir build
$ cd build
$ cmake -DCMAKE_INSTALL_PREFIX=/some/place -DCMAKE_BUILD_TYPE=Release ..
$ make install
```
### Windows
```cmd
> git clone https://github.com/jhunkeler/reloc
> cd reloc
> mkdir build
> cd build
> cmake -DCMAKE_INSTALL_PREFIX=c:\some\place -DCMAKE_BUILD_TYPE=Release ..
> cmake --build . --target INSTALL
```
## Usage
```
$ reloc <str1> <str2> <input_file> <output_file>
Arguments:
str1 - Pattern to search for
str2 - Replace str1 with contents of str2
input_file - Path to input file
output_file - Path to output file
Example:
reloc /original/path /new/path input.bin output.bin
```
## Showcase
### Before
```
$ xxd -u -g1 test.dat
00000000: DE AD BE EF 2F 5F 30 31 32 33 34 35 36 37 38 39 ..../_0123456789
00000010: 5F 30 31 32 33 34 35 36 37 38 39 5F 30 31 32 33 _0123456789_0123
00000020: 34 35 36 37 38 39 5F 30 31 32 33 34 35 36 37 38 456789_012345678
00000030: 39 5F 30 31 32 33 34 35 36 37 38 39 5F 30 31 32 9_0123456789_012
00000040: 33 34 35 36 37 38 39 5F 30 31 32 33 34 35 36 37 3456789_01234567
00000050: 38 39 5F 2F 74 65 73 74 00 52 41 4E 44 4F 4D 20 89_/test.RANDOM
00000060: 44 41 54 41 20 54 48 41 54 20 43 41 4E 4E 4F 54 DATA THAT CANNOT
00000070: 20 42 45 20 4D 4F 56 45 44 00 FE CE FA CE 2F 5F BE MOVED...../_
00000080: 30 31 32 33 34 35 36 37 38 39 5F 30 31 32 33 34 0123456789_01234
00000090: 35 36 37 38 39 5F 30 31 32 33 34 35 36 37 38 39 56789_0123456789
000000a0: 5F 30 31 32 33 34 35 36 37 38 39 5F 30 31 32 33 _0123456789_0123
000000b0: 34 35 36 37 38 39 5F 30 31 32 33 34 35 36 37 38 456789_012345678
000000c0: 39 5F 30 31 32 33 34 35 36 37 38 39 5F 2F 73 75 9_0123456789_/su
000000d0: 66 66 69 78 00 FF FF FF FF FF FF FF FF FF ffix..........
```
### During
```bash
$ reloc \
/_0123456789_0123456789_0123456789_0123456789_0123456789_0123456789_0123456789_ \
/tmp/_installed \
test.dat \
output.dat
```
### After
```
xxd -u -g1 output.dat
00000000: DE AD BE EF 2F 74 6D 70 2F 5F 69 6E 73 74 61 6C ..../tmp/_instal
00000010: 6C 65 64 2F 74 65 73 74 00 00 00 00 00 00 00 00 led/test........
00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000050: 00 00 00 00 00 00 00 00 00 52 41 4E 44 4F 4D 20 .........RANDOM
00000060: 44 41 54 41 20 54 48 41 54 20 43 41 4E 4E 4F 54 DATA THAT CANNOT
00000070: 20 42 45 20 4D 4F 56 45 44 00 FE CE FA CE 2F 74 BE MOVED...../t
00000080: 6D 70 2F 5F 69 6E 73 74 61 6C 6C 65 64 2F 73 75 mp/_installed/su
00000090: 66 66 69 78 00 00 00 00 00 00 00 00 00 00 00 00 ffix............
000000a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
000000b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
000000c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
000000d0: 00 00 00 00 00 FF FF FF FF FF FF FF FF FF ..............
```
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