How to update one file located in a zip subdirectory?

Question

I have a zip archive that contains several folders and I need to update one specific file within such a folder.

How can I update the file with a command line? I have already tried

7z u my.zip ./folder/text.file

But that places the file into the zip's root.

Also

zip -u my.zip ./folder/text.file

doesn't seem to do anything.

Thanks!

Solution

The relative path needs to be the same within the zip and with the directory structure on the file system, from the current directory.

Comments

[Wayne Jhukie]

I think the relative path needs to be the same within the zip and with the directory structure on the file system, from the current directory. Is that the case?

[Force]

Ah, it should be 7z u my.zip ./ - that solved the problem. Do you want to add an answer, so I can accept it?