也是 AWS 在年假前丟出來的功能：「EC2 Run Command Update – Now Available for Linux Instances」。
原先只能用在 Windows Instance 上，現在則支援 Linux Instance 了：
When we launched EC2 Run Command seven weeks ago (see my post, New EC2 Run Command – Remote Instance Management at Scale to learn more), I promised similar functionality for instances that run Linux. I am happy to be able to report that this functionality is available now and that you can start using it today.
跟一般 SSH 登入不一樣的地方在於這個功能可以被 AWS IAM 的系統稽核，所有透過這個功能下的指令都會被 AWS 記錄起來。
