-t (set Type of archive) switch
Specifies the type of archive.
Syntax
-t{archive_type}
- {archive_type}
- Specifies the type of archive. It can be: 7z, zip, gzip, bzip2, or tar. 7z format is the default.
Note: gzip or bzip2 formats support only one file per archive. If you want to compress more than one file to these formats, create a tar archive first, and then compress it with your selected format.
Example
7z a -tzip archive.zip *.txt
adds all *.txt files from current directory to zip archive archive.zip.