diff --git a/src/entity_manager/utils.cpp b/src/entity_manager/utils.cpp
new file mode 100644
index 0000000..b169bce
--- /dev/null
+++ b/src/entity_manager/utils.cpp
@@ -0,0 +1,270 @@
+#include "utils.hpp"
+
+#include "../variant_visitors.hpp"
+#include "expression.hpp"
+
+#include <boost/algorithm/string/classification.hpp>
+#include <boost/algorithm/string/find.hpp>
+#include <boost/algorithm/string/predicate.hpp>
+#include <boost/algorithm/string/replace.hpp>
+#include <boost/algorithm/string/split.hpp>
+#include <sdbusplus/bus/match.hpp>
+
+#include <fstream>
+#include <iostream>
+
+namespace em_utils
+{
+
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
+static bool powerStatusOn = false;
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
+static std::unique_ptr<sdbusplus::bus::match_t> powerMatch = nullptr;
+
+constexpr const char* templateChar = "$";
+
+bool isPowerOn()
+{
+    if (!powerMatch)
+    {
+        throw std::runtime_error("Power Match Not Created");
+    }
+    return powerStatusOn;
+}
+
+void setupPowerMatch(const std::shared_ptr<sdbusplus::asio::connection>& conn)
+{
+    powerMatch = std::make_unique<sdbusplus::bus::match_t>(
+        static_cast<sdbusplus::bus_t&>(*conn),
+        "type='signal',interface='" + std::string(properties::interface) +
+            "',path='" + std::string(power::path) + "',arg0='" +
+            std::string(power::interface) + "'",
+        [](sdbusplus::message_t& message) {
+            std::string objectName;
+            boost::container::flat_map<std::string, std::variant<std::string>>
+                values;
+            message.read(objectName, values);
+            auto findState = values.find(power::property);
+            if (findState != values.end())
+            {
+                powerStatusOn = boost::ends_with(
+                    std::get<std::string>(findState->second), "Running");
+            }
+        });
+
+    conn->async_method_call(
+        [](boost::system::error_code ec,
+           const std::variant<std::string>& state) {
+            if (ec)
+            {
+                return;
+            }
+            powerStatusOn =
+                boost::ends_with(std::get<std::string>(state), "Running");
+        },
+        power::busname, power::path, properties::interface, properties::get,
+        power::interface, power::property);
+}
+
+bool fwVersionIsSame()
+{
+    std::ifstream version(versionFile);
+    if (!version.good())
+    {
+        std::cerr << "Can't read " << versionFile << "\n";
+        return false;
+    }
+
+    std::string versionData;
+    std::string line;
+    while (std::getline(version, line))
+    {
+        versionData += line;
+    }
+
+    std::string expectedHash =
+        std::to_string(std::hash<std::string>{}(versionData));
+
+    std::filesystem::create_directory(configurationOutDir);
+    std::ifstream hashFile(versionHashFile);
+    if (hashFile.good())
+    {
+        std::string hashString;
+        hashFile >> hashString;
+
+        if (expectedHash == hashString)
+        {
+            return true;
+        }
+        hashFile.close();
+    }
+
+    std::ofstream output(versionHashFile);
+    output << expectedHash;
+    return false;
+}
+
+// Replaces the template character like the other version of this function,
+// but checks all properties on all interfaces provided to do the substitution
+// with.
+std::optional<std::string> templateCharReplace(
+    nlohmann::json::iterator& keyPair, const DBusObject& object,
+    const size_t index, const std::optional<std::string>& replaceStr)
+{
+    for (const auto& [_, interface] : object)
+    {
+        auto ret = templateCharReplace(keyPair, interface, index, replaceStr);
+        if (ret)
+        {
+            return ret;
+        }
+    }
+    return std::nullopt;
+}
+
+// finds the template character (currently set to $) and replaces the value with
+// the field found in a dbus object i.e. $ADDRESS would get populated with the
+// ADDRESS field from a object on dbus
+std::optional<std::string> templateCharReplace(
+    nlohmann::json::iterator& keyPair, const DBusInterface& interface,
+    const size_t index, const std::optional<std::string>& replaceStr)
+{
+    std::optional<std::string> ret = std::nullopt;
+
+    if (keyPair.value().type() == nlohmann::json::value_t::object ||
+        keyPair.value().type() == nlohmann::json::value_t::array)
+    {
+        for (auto nextLayer = keyPair.value().begin();
+             nextLayer != keyPair.value().end(); nextLayer++)
+        {
+            templateCharReplace(nextLayer, interface, index, replaceStr);
+        }
+        return ret;
+    }
+
+    std::string* strPtr = keyPair.value().get_ptr<std::string*>();
+    if (strPtr == nullptr)
+    {
+        return ret;
+    }
+
+    boost::replace_all(*strPtr, std::string(templateChar) + "index",
+                       std::to_string(index));
+    if (replaceStr)
+    {
+        boost::replace_all(*strPtr, *replaceStr, std::to_string(index));
+    }
+
+    for (const auto& [propName, propValue] : interface)
+    {
+        std::string templateName = templateChar + propName;
+        boost::iterator_range<std::string::const_iterator> find =
+            boost::ifind_first(*strPtr, templateName);
+        if (!find)
+        {
+            continue;
+        }
+
+        size_t start = find.begin() - strPtr->begin();
+
+        // check for additional operations
+        if ((start == 0U) && find.end() == strPtr->end())
+        {
+            std::visit([&](auto&& val) { keyPair.value() = val; }, propValue);
+            return ret;
+        }
+
+        constexpr const std::array<char, 5> mathChars = {'+', '-', '%', '*',
+                                                         '/'};
+        size_t nextItemIdx = start + templateName.size() + 1;
+
+        if (nextItemIdx > strPtr->size() ||
+            std::find(mathChars.begin(), mathChars.end(),
+                      strPtr->at(nextItemIdx)) == mathChars.end())
+        {
+            std::string val = std::visit(VariantToStringVisitor(), propValue);
+            boost::ireplace_all(*strPtr, templateName, val);
+            continue;
+        }
+
+        // save the prefix
+        std::string prefix = strPtr->substr(0, start);
+
+        // operate on the rest
+        std::string end = strPtr->substr(nextItemIdx);
+
+        std::vector<std::string> split;
+        boost::split(split, end, boost::is_any_of(" "));
+
+        // need at least 1 operation and number
+        if (split.size() < 2)
+        {
+            std::cerr << "Syntax error on template replacement of " << *strPtr
+                      << "\n";
+            for (const std::string& data : split)
+            {
+                std::cerr << data << " ";
+            }
+            std::cerr << "\n";
+            continue;
+        }
+
+        // we assume that the replacement is a number, because we can
+        // only do math on numbers.. we might concatenate strings in the
+        // future, but thats later
+        int number = std::visit(VariantToIntVisitor(), propValue);
+        auto exprBegin = split.begin();
+        auto exprEnd = split.end();
+
+        number = expression::evaluate(number, exprBegin, exprEnd);
+
+        std::string replaced(find.begin(), find.end());
+        while (exprBegin != exprEnd)
+        {
+            replaced.append(" ").append(*exprBegin++);
+        }
+        ret = replaced;
+
+        std::string result = prefix + std::to_string(number);
+        while (exprEnd != split.end())
+        {
+            result.append(" ").append(*exprEnd++);
+        }
+        keyPair.value() = result;
+
+        // We probably just invalidated the pointer abovei,
+        // reset and continue to handle multiple templates
+        strPtr = keyPair.value().get_ptr<std::string*>();
+        if (strPtr == nullptr)
+        {
+            break;
+        }
+    }
+
+    strPtr = keyPair.value().get_ptr<std::string*>();
+    if (strPtr == nullptr)
+    {
+        return ret;
+    }
+
+    std::string_view strView = *strPtr;
+    int base = 10;
+    if (boost::starts_with(strView, "0x"))
+    {
+        strView.remove_prefix(2);
+        base = 16;
+    }
+
+    uint64_t temp = 0;
+    const char* strDataEndPtr = strView.data() + strView.size();
+    const std::from_chars_result res =
+        std::from_chars(strView.data(), strDataEndPtr, temp, base);
+    if (res.ec == std::errc{} && res.ptr == strDataEndPtr)
+    {
+        keyPair.value() = temp;
+    }
+
+    return ret;
+}
+
+} // namespace em_utils