??

???????????????????????,??????????????,???????????

????

  • ???:Ubuntu
  • ??:cttke(????)
  • ??:?????? + ????

???:??????

sudo -i
cat > /root/keep-alive.sh << 'EOF'
#!/bin/bash
while true; do
    curl -s https://www.baidu.com > /dev/null
    sha256sum /dev/urandom | head -c 100 > /dev/null
    sleep 300
done
EOF

???:??????

chmod +x /root/keep-alive.sh

???:????

/root/keep-alive.sh &
ps aux | grep keep-alive

???:??systemd??

cat > /etc/systemd/system/keep-alive.service << 'EOF'
[Unit]
Description=Keep Alive Service
After=network.target

[Service]
Type=simple
ExecStart=/root/keep-alive.sh
Restart=always
User=root

[Install]
WantedBy=multi-user.target
EOF

systemctl enable keep-alive.service
systemctl start keep-alive.service

??

  • ??????????????
  • ?5????????
  • ??CPU??
  • ????????
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