This question was closed and subsequently deleted.
The close reason was given as "unclear what you're asking", but from the comments it seems quite clear that multiple persons had no problem understanding the question at all.
It also seems quite relevant to professional system administration, since managing a system remotely certainly is a relevant system administrator skill, and wiping a system from data before it is re-purposed is best practice for any system which has contained any sensitive data.
It is not a perfect question, so closing could be considered reasonable. The question was lacking information about which OS was installed on the host, and the OP was focusing a bit too much on shutting down the machine and too little on reliably wiping data from the machine. But those shortcomings could have been resolved and in my opinion don't justify a speedy deletion.
Update: At the time where I wrote this meta question, I was unaware that the question was a duplicate. Given the information provided in answers, I would consider it optimal to have the question undeleted and then closed as duplicate of Securely wipe a headless remote linux server.