-u (Update options) switch. Specifies how to update files in an archive and (or) how to create new archives. Syntax. -u[-]<action_set>[!new_archive_name}] ...
u (Update) command. Update older files in the archive and add files that are not already in the archive. Note: the updating of solid .7z archives can be ...
2023年10月18日 — Command Examples for Windows. The 7-Zip command-line executable file is the 7za.exe. You can use the EXE file to run commands on archives.
u (Update) command. Update older files in the archive and add files that are not already in the archive. Note: the updating of solid .7z archives can be ...