Disables most of the normal user queries during 7-Zip execution. You can use this switch to suppress overwrite queries in the e (Extract) and x (Extract with full paths) commands.
7z x src.zip -y
extracts all files from src.zip archive. All overwrite queries will be suppressed and files on disk with same filenames as in archive will be overwritten.
e (Extract), x (Extract with full paths)
Switches: -ao (Overwrite mode),