diff --git a/linux_os/guide/system/permissions/files/permissions_var_log_dir/file_owner_var_log_syslog/tests/correct_owner.pass.sh b/linux_os/guide/system/permissions/files/permissions_var_log_dir/file_owner_var_log_syslog/tests/correct_owner.pass.sh
new file mode 100644
index 0000000000..5dbd79c4e6
--- /dev/null
+++ b/linux_os/guide/system/permissions/files/permissions_var_log_dir/file_owner_var_log_syslog/tests/correct_owner.pass.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+
+if [ ! -f /var/log/syslog ]; then
+    mkdir -p /var/log/
+    touch /var/log/syslog
+fi
+
+if ! grep -q "^syslog:" /etc/passwd; then
+    useradd syslog
+fi
+
+chown syslog /var/log/syslog
+
diff --git a/linux_os/guide/system/permissions/files/permissions_var_log_dir/file_owner_var_log_syslog/tests/incorrect_owner.fail.sh b/linux_os/guide/system/permissions/files/permissions_var_log_dir/file_owner_var_log_syslog/tests/incorrect_owner.fail.sh
new file mode 100644
index 0000000000..c1855cbd56
--- /dev/null
+++ b/linux_os/guide/system/permissions/files/permissions_var_log_dir/file_owner_var_log_syslog/tests/incorrect_owner.fail.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+
+if [ ! -f /var/log/syslog ]; then
+    mkdir -p /var/log/
+    touch /var/log/syslog
+fi
+
+if ! grep -q "^syslog:" /etc/passwd; then
+    useradd syslog
+fi
+
+useradd testuser_123
+chown testuser_123 /var/log/syslog
diff --git a/shared/templates/file_owner/tests/correct_owner.pass.sh b/shared/templates/file_owner/tests/correct_owner.pass.sh
index f05418c94f..92b31b7d87 100644
--- a/shared/templates/file_owner/tests/correct_owner.pass.sh
+++ b/shared/templates/file_owner/tests/correct_owner.pass.sh
@@ -8,15 +8,15 @@ fi
 {{% if FILE_REGEX %}}
 echo "Create specific tests for this rule because of regex"
 {{% elif RECURSIVE %}}
-find -L {{{ path }}} -type d -exec chown {{{ FILEUID }}} {} \;
+find -L {{{ path }}} -type d -exec chown {{{ UID_OR_NAME }}} {} \;
 {{% else %}}
-chown {{{ FILEUID }}} {{{ path }}}
+chown {{{ UID_OR_NAME }}} {{{ path }}}
 {{% endif %}}
 {{% else %}}
 if [ ! -f {{{ path }}} ]; then
     mkdir -p "$(dirname '{{{ path }}}')"
     touch {{{ path }}}
 fi
-chown {{{ FILEUID }}} {{{ path }}}
+chown {{{ UID_OR_NAME }}} {{{ path }}}
 {{% endif %}}
 {{% endfor %}}
diff --git a/shared/templates/file_owner/tests/incorrect_owner.fail.sh b/shared/templates/file_owner/tests/incorrect_owner.fail.sh
index 8d4ccfe0d5..82c16cb89a 100644
--- a/shared/templates/file_owner/tests/incorrect_owner.fail.sh
+++ b/shared/templates/file_owner/tests/incorrect_owner.fail.sh
@@ -13,6 +13,7 @@ useradd testuser_123
 if [ ! -d {{{ path }}} ]; then
     mkdir -p {{{ path }}}
 fi
+touch "{{{ path }}}"/cac_file_owner_test_file
 {{% if FILE_REGEX %}}
 find -L {{{ path }}} {{{ FIND_RECURSE_ARGS }}} -type f -regex '{{{ FILE_REGEX[loop.index0] }}}' -exec chown testuser_123 {} \;
 {{% elif RECURSIVE %}}
diff --git a/tests/test_file_owner_uid_or_name_behavior.py b/tests/test_file_owner_uid_or_name_behavior.py
new file mode 100644
index 0000000000..6fa46dc554
--- /dev/null
+++ b/tests/test_file_owner_uid_or_name_behavior.py
@@ -0,0 +1,386 @@
+#!/usr/bin/env python3
+import importlib.util
+import os
+import random
+import re
+import shutil
+import subprocess
+import sys
+import tempfile
+import xml.etree.ElementTree as ET
+from pathlib import Path
+
+
+REPO_ROOT = Path(__file__).resolve().parents[1]
+OPENSHIFT_ROOT = REPO_ROOT / "applications" / "openshift"
+TEMPLATE_ROOT = REPO_ROOT / "shared" / "templates" / "file_owner"
+RULE_ID = "file_owner_fixture_uid_or_name"
+
+sys.path.insert(0, str(REPO_ROOT))
+
+import ssg.jinja  # noqa: E402
+
+
+def _assert(condition, message):
+    if not condition:
+        raise AssertionError(message)
+
+
+def _run(cmd, **kwargs):
+    result = subprocess.run(
+        cmd,
+        text=True,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        **kwargs,
+    )
+    if result.returncode != 0:
+        raise AssertionError(
+            "command failed: {0}\nstdout:\n{1}\nstderr:\n{2}".format(
+                " ".join(cmd), result.stdout, result.stderr
+            )
+        )
+    return result
+
+
+def _load_template_preprocessor():
+
+
+
+    path = TEMPLATE_ROOT / "template.py"
+    spec = importlib.util.spec_from_file_location("fixture_file_owner_template", path)
+    module = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(module)
+    return module
+
+
+def _render_file_owner_template(lang, template_vars):
+    params = dict(template_vars)
+    params.setdefault("_rule_id", RULE_ID)
+    params.setdefault("recursive", "false")
+
+    preprocessor = _load_template_preprocessor()
+    processed = preprocessor.preprocess(params, lang)
+    substitutions = {key.upper(): value for key, value in processed.items()}
+    merged = ssg.jinja.load_macros()
+    merged.update(substitutions)
+
+    return ssg.jinja.process_file(str(TEMPLATE_ROOT / f"{lang}.template"), merged)
+
+
+def _parse_oval_fragment(rendered_oval):
+    wrapped = (
+        '<root xmlns:unix="urn:unix" xmlns:ind="urn:ind" xmlns:xsi="urn:xsi">'
+        + rendered_oval
+        + "</root>"
+    )
+    return ET.fromstring(wrapped)
+
+
+def _namespace(tag):
+    return {
+        "unix": f"{{urn:unix}}{tag}",
+        "ind": f"{{urn:ind}}{tag}",
+    }
+
+
+def _local_name(tag):
+    return tag.rsplit("}", 1)[-1]
+
+
+def _unique_user():
+    return "cacfo{0}{1}".format(os.getpid(), random.randrange(1000, 9999))
+
+
+def _ensure_user(name):
+    try:
+        import pwd
+
+        return pwd.getpwnam(name).pw_uid
+    except KeyError:
+        _run(["useradd", name])
+        return pwd.getpwnam(name).pw_uid
+
+
+def _delete_user(name):
+    subprocess.run(["userdel", "-r", name], text=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+
+
+def _run_shell_script(script):
+    result = subprocess.run(
+        ["bash", "-e"],
+        input=script,
+        text=True,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+    )
+    if result.returncode != 0:
+        raise AssertionError(
+            "rendered shell remediation failed\nstdout:\n{0}\nstderr:\n{1}\nscript:\n{2}".format(
+                result.stdout, result.stderr, script
+            )
+        )
+
+
+def test_bash_remediation_accepts_numeric_uid_and_username():
+    _assert(os.geteuid() == 0, "ownership behavior checks must run as root")
+    _assert(shutil.which("useradd"), "useradd is required for username ownership checks")
+    _assert(shutil.which("userdel"), "userdel is required for username ownership cleanup")
+
+    owner_name = _unique_user()
+    try:
+        owner_uid = _ensure_user(owner_name)
+        _assert(owner_uid != 0, "dynamic test account should not be root")
+
+        with tempfile.TemporaryDirectory(prefix="cac-file-owner-") as tmpdir:
+            target = Path(tmpdir) / "owned_file"
+            target.write_text("fixture file_owner behavior\n", encoding="utf-8")
+
+            os.chown(target, 0, -1)
+            numeric_script = _render_file_owner_template(
+                "bash", {"filepath": str(target), "uid_or_name": str(owner_uid)}
+            )
+            _run_shell_script(numeric_script)
+            _assert(
+                target.stat().st_uid == owner_uid,
+                "numeric uid_or_name should be accepted by the generated remediation",
+            )
+
+            os.chown(target, 0, -1)
+            username_script = _render_file_owner_template(
+                "bash", {"filepath": str(target), "uid_or_name": owner_name}
+            )
+            _run_shell_script(username_script)
+            _assert(
+                target.stat().st_uid == owner_uid,
+                "username uid_or_name should be resolved by the system when remediation runs",
+            )
+    finally:
+        _delete_user(owner_name)
+
+
+def test_oval_check_numeric_uid_uses_integer_user_id():
+    for uid in ("0", "4242"):
+        rendered = _render_file_owner_template(
+            "oval", {"filepath": "/tmp/cac-file-owner-fixture", "uid_or_name": uid}
+        )
+        root = _parse_oval_fragment(rendered)
+        user_ids = list(root.iter(_namespace("user_id")["unix"]))
+        _assert(user_ids, "rendered numeric OVAL must contain a file owner user_id state")
+        _assert(
+            any(el.attrib.get("datatype") == "int" and (el.text or "").strip() == uid for el in user_ids),
+            "numeric uid_or_name should render as an integer user_id matching the configured UID",
+        )
+        _assert(
+            all("var_ref" not in el.attrib for el in user_ids),
+            "numeric uid_or_name should not require a runtime username lookup variable",
+        )
+        passwd_lookups = [
+            (el.text or "").strip()
+            for el in root.iter(_namespace("filepath")["ind"])
+            if (el.text or "").strip() == "/etc/passwd"
+        ]
+        _assert(
+            not passwd_lookups,
+            "numeric uid_or_name should keep the previous direct numeric UID behavior",
+        )
+
+
+def test_oval_check_username_resolves_owner_on_scanned_system():
+    username = "cac_fixture_owner_{0}".format(random.randrange(10000, 99999))
+    rendered = _render_file_owner_template(
+        "oval", {"filepath": "/tmp/cac-file-owner-fixture", "uid_or_name": username}
+    )
+    root = _parse_oval_fragment(rendered)
+
+    user_ids = list(root.iter(_namespace("user_id")["unix"]))
+    _assert(user_ids, "rendered username OVAL must contain a file owner user_id state")
+    _assert(
+        any("var_ref" in el.attrib for el in user_ids),
+        "username uid_or_name should compare file owner against a runtime-resolved UID",
+    )
+    _assert(
+        all((el.text or "").strip() != username for el in user_ids),
+        "username uid_or_name must not be emitted as a literal integer user_id",
+    )
+
+    var_refs = {
+        el.attrib["var_ref"]
+        for el in user_ids
+        if el.attrib.get("datatype") == "int" and "var_ref" in el.attrib
+    }
+    _assert(
+        var_refs,
+        "username uid_or_name should use a runtime variable for the expected UID",
+    )
+
+    variables = {el.attrib.get("id"): el for el in root.iter() if _local_name(el.tag).endswith("variable")}
+    connected_variables = [variables[var_ref] for var_ref in var_refs if var_ref in variables]
+    _assert(
+        connected_variables,
+        "username UID comparison should be backed by an OVAL variable definition",
+    )
+
+    component_refs = set()
+    for variable in connected_variables:
+        for element in variable.iter():
+            ref = element.attrib.get("object_ref")
+            if ref:
+                component_refs.add(ref)
+
+    lookup_objects = {el.attrib.get("id"): el for el in root.iter(_namespace("textfilecontent54_object")["ind"])}
+    connected_lookup_objects = [lookup_objects[ref] for ref in component_refs if ref in lookup_objects]
+    _assert(
+        connected_lookup_objects,
+        "runtime UID variable should be derived from scanned system account data",
+    )
+
+    lookup_text = "\n".join(
+        (element.text or "").strip()
+        for lookup_object in connected_lookup_objects
+        for element in lookup_object.iter()
+    )
+    _assert(
+        username in lookup_text,
+        "runtime UID lookup should be tied to the configured account name",
+    )
+
+
+def _line_indent(line):
+    return len(line) - len(line.lstrip(" "))
+
+
+def _strip_quotes(value):
+    value = value.strip()
+    if len(value) >= 2 and value[0] in ("'", '"') and value[-1] == value[0]:
+        return value[1:-1]
+    return value
+
+
+def _active_file_owner_template_vars(rule_path):
+    lines = rule_path.read_text(encoding="utf-8").splitlines()
+    for index, line in enumerate(lines):
+        stripped = line.strip()
+        if not stripped or stripped.startswith("#"):
+            continue
+        if stripped != "template:":
+            continue
+
+        template_indent = _line_indent(line)
+        block = []
+        for candidate in lines[index + 1 :]:
+            candidate_stripped = candidate.strip()
+            if (
+                candidate_stripped
+                and not candidate_stripped.startswith("#")
+                and _line_indent(candidate) <= template_indent
+            ):
+                break
+            block.append(candidate)
+
+        is_file_owner = False
+        vars_index = None
+        vars_indent = None
+        for block_index, block_line in enumerate(block):
+            block_stripped = block_line.strip()
+            if not block_stripped or block_stripped.startswith("#") or block_stripped.startswith("{{"):
+                continue
+            if block_stripped.startswith("name:"):
+                is_file_owner = _strip_quotes(block_stripped.split(":", 1)[1]) == "file_owner"
+            if block_stripped == "vars:":
+                vars_index = block_index
+                vars_indent = _line_indent(block_line)
+
+        if not is_file_owner or vars_index is None:
+            continue
+
+        vars_ = {}
+        for var_line in block[vars_index + 1 :]:
+            var_stripped = var_line.strip()
+            if not var_stripped or var_stripped.startswith("#") or var_stripped.startswith("{{"):
+                continue
+            if _line_indent(var_line) <= vars_indent:
+                break
+            match = re.match(r"([A-Za-z0-9_@-]+)\s*:\s*(.*)$", var_stripped)
+            if match:
+                vars_[match.group(1)] = _strip_quotes(match.group(2))
+        return vars_
+    return None
+
+
+def _base_file_owner_template_vars(relative_path):
+    try:
+        result = _run(["git", "show", "HEAD:{0}".format(relative_path)])
+    except AssertionError:
+        return None
+
+    with tempfile.NamedTemporaryFile("w", encoding="utf-8", delete=False) as tmp:
+        tmp.write(result.stdout)
+        tmp_path = Path(tmp.name)
+    try:
+        return _active_file_owner_template_vars(tmp_path)
+    finally:
+        tmp_path.unlink(missing_ok=True)
+
+
+def test_openshift_file_owner_rules_use_uid_or_name_and_preserve_values():
+    discovered = {}
+    migrated_from_base = {}
+    offenders = []
+    for rule_path in OPENSHIFT_ROOT.rglob("rule.yml"):
+        vars_ = _active_file_owner_template_vars(rule_path)
+        if vars_ is None:
+            continue
+        relative = rule_path.relative_to(REPO_ROOT).as_posix()
+        discovered[relative] = vars_
+        base_vars = _base_file_owner_template_vars(relative)
+        if base_vars and "fileuid" in base_vars:
+            migrated_from_base[relative] = base_vars["fileuid"]
+        if "fileuid" in vars_ or "uid_or_name" not in vars_:
+            offenders.append(
+                "{0}: fileuid={1!r}, uid_or_name={2!r}".format(
+                    relative, vars_.get("fileuid"), vars_.get("uid_or_name")
+                )
+            )
+
+    _assert(discovered, "expected active OpenShift file_owner rules to exist")
+    _assert(
+        not offenders,
+        "active OpenShift file_owner rules must use uid_or_name instead of fileuid:\n"
+        + "\n".join(offenders),
+    )
+
+    _assert(
+        migrated_from_base,
+        "expected base OpenShift file_owner rules using fileuid to be migration targets",
+    )
+
+    wrong = []
+    for relative, expected in sorted(migrated_from_base.items()):
+        if relative not in discovered:
+            wrong.append("{0}: active file_owner rule disappeared".format(relative))
+            continue
+        actual = str(discovered[relative].get("uid_or_name"))
+        if actual != expected:
+            wrong.append("{0}: expected {1!r}, got {2!r}".format(relative, expected, actual))
+    _assert(
+        not wrong,
+        "OpenShift file_owner uid_or_name values must preserve the previous owner:\n"
+        + "\n".join(wrong),
+    )
+
+
+def main():
+    tests = [
+        test_bash_remediation_accepts_numeric_uid_and_username,
+        test_oval_check_numeric_uid_uses_integer_user_id,
+        test_oval_check_username_resolves_owner_on_scanned_system,
+        test_openshift_file_owner_rules_use_uid_or_name_and_preserve_values,
+    ]
+    for test in tests:
+        test()
+        print("PASS {0}".format(test.__name__))
+
+
+if __name__ == "__main__":
+    main()
diff --git a/mimo_test_command.sh b/mimo_test_command.sh
new file mode 100755
--- /dev/null
+++ b/mimo_test_command.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+set -uo pipefail
+cd /testbed
+
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="/testbed"
+
+
+
+case "${1:-}" in
+  base)
+    python3 - <<'PY'
+import sys
+sys.path.insert(0, "/testbed")
+import ssg.jinja
+print("base smoke: ssg.jinja import ok")
+PY
+    ;;
+  new)
+    python3 /testbed/tests/test_file_owner_uid_or_name_behavior.py
+    ;;
+  *)
+    echo "usage: $0 base|new"
+    exit 2
+    ;;
+esac