cpu使用率 cpu=$(cat <(grep 'cpu ' /proc/stat) <(sleep 1 && grep 'cpu ' /proc/stat) | awk -v RS="" '{print ($13-$2+$15-$4)*100/($13-$2+$15-$4+$16-$5)}')

sendmail { "bk_app_code": "bk_nodeman", "bk_username": "admin", "bk_app_secret": "64a84ed3-f5dc-46e2-a922-7e51e414cd9f", "receiver": "[email protected]", "sender": "[email protected]", "title": "This is a Test", "content": "Welcome to Blueking" }