/etc/systemd/system/
memory-guardian.service
cat > /etc/systemd/system/memory-guardian.service << 'EOF'
[Unit]
Description=Memory Guardian Service
After=network.target
[Service]
Type=simple
ExecStart=/usr/local/bin/memory_guardian.sh
Restart=always
RestartSec=10
User=root
[Install]
WantedBy=multi-user.target
EOF