7-Zip 4.65 Online Manual
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file archiver with highest compression ratio
113 (65%) 
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7-Zip Start Page
General Information
- File Manager
- Command Line Version
- Syntax
- Exit Codes
- Commands
- Switches
- -- (Stop switches parsing)
- -ai (Include archive filenames) switch
- -an (Disable parsing of archive_name) switch
- -ao (Overwrite mode)
- -ax (Exclude archive filenames) switch
- -i (Include filenames)
- -m (Set Compression Method)
- -o (Set Output directory)
- -p (Set Password)
- -r (Recurse subdirectories)
- -scs (Set charset for list files)
- -seml (Send archive by email)
- -sfx (Create SFX archive)
- -si (Read data from StdIn)
- -so (Write data to StdOut)
- -slp (Set Large Pages mode)
- -slt (Show technical information)
- -ssc (Set Sensitive Case mode)
- -ssw (Compress files open for writing)
- -t (Set Type of archive)
- -u (Update options)
- -v (Create Volumes)
- -w (Set Working directory)
- -x (Exclude filenames)
-y (Assume Yes on all queries)
-so (write data to stdout) switch
Causes 7-Zip to write output data to stdout (standard output stream).
Syntax
syntax"> -so
Examples
7z x archive.gz -so > Doc.txt
decompresses archive.gz archive to output stream and then redirects that stream to Doc.txt file.
7z a dummy -tgzip -so Doc.txt > archive.gz
compresses the Doc.txt file to the 7-Zip standard output stream and writes that stream to archive.gz file.
Commands that can be used with this switch
a (Add), e (Extract), u (Update), x (Extract with full paths)