-si (read data from stdin) switch

Causes 7-Zip to read data from stdin (standard input) instead of from disc files.


Specifies a name that will be stored in the archive for the compressed data. If file_name is not specified, data will be stored without a name.

Note: The current version of 7-Zip support reading of archives from stdin only for xz, lzma, tar, gzip and bzip2 archives.


7z a archive.gz -tgzip -siDoc2.txt < Doc.txt

compresses input stream from file Doc.txt to archive.gz archive using Doc2.txt file name.

7z x 7z905.tar.gz -so | 7z x -si -ttar

decompresses tar.gz archive.

Commands that can be used with this switch

a (Add), e (Extract), h (Hash), u (Update), x (Extract with full paths)