Detect if a VM is running in Google Compute Engine

Detect if a VM is running in Compute Engine

sudo dmidecode -s system-product-name | grep "Google Compute Engine"
這個需要 root 權限，實際上是去讀取 /sys/firmware/dmi/tables/DMI
用 strings /sys/firmware/dmi/tables/DMI | grep "Google Compute Engine" 也行

若程式沒有 root 權限，可以去讀取 /etc/hosts 有沒有包含 Added by Google 字樣
grep "Added by Google" /etc/hosts