7-zip command lines to add password-protection to unprotected zip file

Question

Suppose I already have an existing zip file Unprotected.zip. I want to add password protection to Unprotected.zip. I want to use 7-zip command-line version to accomplish this task. How should the 7-zip command lines look like to achieve this goal?

Answer 1

I think there is no one-step solution to do this. We have to extract the zip file, and then pack it to zip file. For example:

7z e Unprotected.zip

7z a Protected.zip -pPASSWORD UNPROTECTEDFILENAME

Replace the capital letters into your own string.

Refer to Add Set-Password