OPTIONS¶

-zip64

Create a Zip64-compliant zip container. Use this option if the input is greater than 4Gig.

Default is disabled.

-zipfile=F

Write zip container to the filename "F".

Use the "Stream" option to force the creation of a streamed zip file.

-member-name=M

This option is used to name the "file" in the zip container.

Default is '-'.

-stream

Ignored when writing to "stdout".

If the "zipfile" option is specified, including this option will trigger the creation of a streamed zip file.

Default: Always enabled when writing to "stdout", otherwise disabled.

-method=M

Compress using method "M".

Valid method names are

    * store    Store without compression
    * deflate  Use Deflate compression [Deflault]
    * bzip2    Use Bzip2 compression
    * lzma     Use LZMA compression
    * xz       Use xz compression
    * zstd     Use Zstandard compression
    

Note that Lzma compress needs "IO::Compress::Lzma" to be installed.

Note that Zstd compress needs "IO::Compress::Zstd" to be installed.

Default is "deflate".

-0, -1, -2, -3, -4, -5, -6, -7, -8, -9

Sets the compression level for "deflate". Ignored for all other compression methods.

-0 means no compression and -9 for maximum compression.

Default is 6

-version

Display version number

-help

Display help

Examples¶

Create a zip file bt reading daa from stdin

    $ echo Lorem ipsum dolor sit | perl ./bin/streamzip >abcd.zip

Check the contents of "abcd,zip" with the standard "unzip" utility

    Archive:  abcd.zip
      Length      Date    Time    Name
    ---------  ---------- -----   ----
           22  2021-01-08 19:45   -
    ---------                     -------
           22                     1 file

Notice how the "Name" is set to "-". That is the default for a few zip utilities whwre the member name is not given.

If you want to explicitly name the file, use the "-member-name" option as follows

    $ echo Lorem ipsum dolor sit | perl ./bin/streamzip -member-name latin >abcd.zip
    $ unzip -l abcd.zip
    Archive:  abcd.zip
      Length      Date    Time    Name
    ---------  ---------- -----   ----
           22  2021-01-08 19:47   latin
    ---------                     -------
           22                     1 file

When to write a Streamed Zip File¶

A Streamed Zip File is useful in situations where you cannot seek backwards/forwards in the file.

A good examples is when you are serving dynamic content from a Web Server straight into a socket without needing to create a temporary zip file in the filesystsm.

Similarly if your workfow uses a Linux pipelined commands.