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+# Library Symbols
+
+This repository will be used to store the library symbols from Apple's operating systems.
+
+## Requirements
+
+This tool was designed to run on macOS only. Windows and Linux are not supported.
+
+The tool relies on the following applications being installed.
+
+* nm
+* otool
+* dyld-shared-cache-extractor ([install guide](https://github.com/keith/dyld-shared-cache-extractor#installation))
+
+## Building
+
+You will need the [Rust development toolkit](https://www.rust-lang.org/tools/install) before you are able to compile the program.
+
+```
+cargo build
+```
+
+After a successful build, the program will live in `target/debug/library_symbols`.
+
+## How To Use The Program
+
+```
+library_symbols [--base_path path_to_os_files] results_folder
+```
+
+Arguments
+* `results_folder`: Where the symbols information (nm, otool, etc.) will be stored.
+* `--base_path` [Optional]: Specify the root filesystem the application should grab the symbols from. If no argument is provided, the path `/` will be used. This is useful for getting symbols from an iPSW file or from an external macOS install.
+
+# Examples
+
+Extracting iPadOS symbols from iPad_Spring_2021_15.5_19F77_Restore.ipsw (don't forget to decompress the .ipsw and mount the `078-12432-106.dmg` image first).
+
+```
+library_symbols --base_path '/Volumes/SkyF19F77.J407J408OS' '/Users/user/Desktop/symbols'
+```
+
+Extracting symbols from current machine (macOS).
+
+```
+library_symbols '/Users/user/Desktop/symbols'
+```
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