Cydra Tools is an app for iOS to manage Cydia and jailbroken devices. It was written in C language and compiled with LLVM Clang (C18 standard).
You can download the source code and a binary file fron my GitHub or just download this install script : cydratools_install.sh. (needs git, make and clang. Sudo is not working on iOS so this app will not be copied to /usr/bin/).