diff --git a/web_interface/blueprints/api_v3.py b/web_interface/blueprints/api_v3.py
index 5911fd5a..cc551588 100644
--- a/web_interface/blueprints/api_v3.py
+++ b/web_interface/blueprints/api_v3.py
@@ -2,6 +2,7 @@ from flask import Blueprint, request, jsonify, Response, send_from_directory
 import json
 import os
 import re
+import shutil
 import socket
 import sys
 import subprocess
@@ -16,6 +17,11 @@ from typing import Optional, Tuple, Dict, Any, Type
 
 logger = logging.getLogger(__name__)
 
+SUDO_BIN = shutil.which("sudo") or "/usr/bin/sudo"
+SYSTEMCTL_BIN = shutil.which("systemctl") or "/usr/bin/systemctl"
+REBOOT_BIN = shutil.which("reboot") or "/usr/sbin/reboot"
+POWEROFF_BIN = shutil.which("poweroff") or "/usr/sbin/poweroff"
+
 # Import new infrastructure
 from src.web_interface.api_helpers import success_response, error_response, validate_request_json
 from src.web_interface.errors import ErrorCode
@@ -218,7 +224,7 @@ def _ensure_display_service_running():
     if status.get('active'):
         status['started'] = False
         return status
-    result = _run_systemctl_command(['sudo', 'systemctl', 'start', 'ledmatrix.service'])
+    result = _run_systemctl_command([SUDO_BIN, SYSTEMCTL_BIN, 'start', 'ledmatrix.service'])
     service_status = _get_display_service_status()
     result['started'] = result.get('returncode') == 0
     result['active'] = service_status.get('active')
@@ -227,7 +233,7 @@ def _ensure_display_service_running():
 
 def _stop_display_service():
     """Stop the ledmatrix display service."""
-    result = _run_systemctl_command(['sudo', 'systemctl', 'stop', 'ledmatrix.service'])
+    result = _run_systemctl_command([SUDO_BIN, SYSTEMCTL_BIN, 'stop', 'ledmatrix.service'])
     status = _get_display_service_status()
     result['active'] = status.get('active')
     result['status'] = status
@@ -1716,7 +1722,7 @@ def execute_system_action():
             if mode:
                 # For on-demand modes, we would need to integrate with the display controller
                 # For now, just start the display service
-                result = subprocess.run(['sudo', 'systemctl', 'start', 'ledmatrix.service'],
+                result = subprocess.run([SUDO_BIN, SYSTEMCTL_BIN, 'start', 'ledmatrix.service'],
                                      capture_output=True, text=True, timeout=15)
                 return jsonify({
                     'status': 'success' if result.returncode == 0 else 'error',
@@ -1727,22 +1733,22 @@ def execute_system_action():
                     'stderr': result.stderr
                 })
             else:
-                result = subprocess.run(['sudo', 'systemctl', 'start', 'ledmatrix.service'],
+                result = subprocess.run([SUDO_BIN, SYSTEMCTL_BIN, 'start', 'ledmatrix.service'],
                                      capture_output=True, text=True, timeout=15)
         elif action == 'stop_display':
-            result = subprocess.run(['sudo', 'systemctl', 'stop', 'ledmatrix.service'],
+            result = subprocess.run([SUDO_BIN, SYSTEMCTL_BIN, 'stop', 'ledmatrix.service'],
                                  capture_output=True, text=True, timeout=15)
         elif action == 'enable_autostart':
-            result = subprocess.run(['sudo', 'systemctl', 'enable', 'ledmatrix.service'],
+            result = subprocess.run([SUDO_BIN, SYSTEMCTL_BIN, 'enable', 'ledmatrix.service'],
                                  capture_output=True, text=True, timeout=15)
         elif action == 'disable_autostart':
-            result = subprocess.run(['sudo', 'systemctl', 'disable', 'ledmatrix.service'],
+            result = subprocess.run([SUDO_BIN, SYSTEMCTL_BIN, 'disable', 'ledmatrix.service'],
                                  capture_output=True, text=True, timeout=15)
         elif action == 'reboot_system':
-            result = subprocess.run(['sudo', 'reboot'],
+            result = subprocess.run([SUDO_BIN, REBOOT_BIN],
                                  capture_output=True, text=True, timeout=10)
         elif action == 'shutdown_system':
-            result = subprocess.run(['sudo', 'poweroff'],
+            result = subprocess.run([SUDO_BIN, POWEROFF_BIN],
                                  capture_output=True, text=True, timeout=10)
         elif action == 'git_pull':
             # Use PROJECT_ROOT instead of hardcoded path
@@ -1824,10 +1830,10 @@ def execute_system_action():
                 'stderr': result.stderr
             })
         elif action == 'restart_display_service':
-            result = subprocess.run(['sudo', 'systemctl', 'restart', 'ledmatrix.service'],
+            result = subprocess.run([SUDO_BIN, SYSTEMCTL_BIN, 'restart', 'ledmatrix.service'],
                                  capture_output=True, text=True, timeout=15)
         elif action == 'restart_web_service':
-            result = subprocess.run(['sudo', 'systemctl', 'restart', 'ledmatrix-web.service'],
+            result = subprocess.run([SUDO_BIN, SYSTEMCTL_BIN, 'restart', 'ledmatrix-web.service'],
                                  capture_output=True, text=True, timeout=15)
         else:
             return jsonify({'status': 'error', 'message': f'Unknown action: {action}'}), 400