透過 AWS EC2 Connect 連入編輯檔案，出現 "index.html" E212: Can't open file for writing 錯誤

Problem

透過 AWS EC2 Connect 連入編輯檔案，出現 "index.html" E212: Can't open file for writing 錯誤

Root Cause

會出現上述問題是因為權限不足所導致

How-To

[ec2-user@ip-172-31-43-197 html]$ vi index.html 
[ec2-user@ip-172-31-43-197 html]$ sudo vi index.html