I used the Terminal to unzip a file by typing Unzip then dragging the file to terminal. The file unzipped successfully and a few GBs were used from my SDD. However, I have no idea where the files are !!! I can't find them in the same folder of the zip file. Where would they be ?
Maybe in your Home folder? It's the default folder the terminal points to. Try to open it through the Go menu in the finder.