.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.42) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. 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No user-serviceable parts. . \" fudge factors for nroff and troff .if n \{\ . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] \fP .\} .if t \{\ . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff .if n \{\ . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} .if t \{\ . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' .\} . \" troff and (daisy-wheel) nroff accents .ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' .ds 8 \h'\*(#H'\(*b\h'-\*(#H' .ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] .ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' .ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' .ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] .ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] .ds ae a\h'-(\w'a'u*4/10)'e .ds Ae A\h'-(\w'A'u*4/10)'E . \" corrections for vroff .if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' .if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' . \" for low resolution devices (crt and lpr) .if \n(.H>23 .if \n(.V>19 \ \{\ . ds : e . ds 8 ss . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE .\} .rm #[ #] #H #V #F C .\" ======================================================================== .\" .IX Title "STREAMZIP 1" .TH STREAMZIP 1 "2025-03-08" "perl v5.34.1" "Perl Programmers Reference Guide" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" streamzip \- create a zip file from stdin .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 2 \& producer | streamzip [opts] | consumer \& producer | streamzip [opts] \-zipfile=output.zip .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" This program will read data from \f(CW\*(C`stdin\*(C'\fR, compress it into a zip container and, by default, write a \fIstreamed\fR zip file to \f(CW\*(C`stdout\*(C'\fR. No temporary files are created. .PP The zip container written to \f(CW\*(C`stdout\*(C'\fR is, by necessity, written in streaming format. Most programs that read Zip files can cope with a streamed zip file, but if interoperability is important, and your workflow allows you to write the zip file directly to disk you can create a non-streamed zip file using the \f(CW\*(C`zipfile\*(C'\fR option. .SS "\s-1OPTIONS\s0" .IX Subsection "OPTIONS" .IP "\-zip64" 5 .IX Item "-zip64" Create a Zip64\-compliant zip container. Use this option if the input is greater than 4Gig. .Sp Default is disabled. .IP "\-zipfile=F" 5 .IX Item "-zipfile=F" Write zip container to the filename \f(CW\*(C`F\*(C'\fR. .Sp Use the \f(CW\*(C`Stream\*(C'\fR option to force the creation of a streamed zip file. .IP "\-member\-name=M" 5 .IX Item "-member-name=M" This option is used to name the \*(L"file\*(R" in the zip container. .Sp Default is '\-'. .IP "\-stream" 5 .IX Item "-stream" Ignored when writing to \f(CW\*(C`stdout\*(C'\fR. .Sp If the \f(CW\*(C`zipfile\*(C'\fR option is specified, including this option will trigger the creation of a streamed zip file. .Sp Default: Always enabled when writing to \f(CW\*(C`stdout\*(C'\fR, otherwise disabled. .IP "\-method=M" 5 .IX Item "-method=M" Compress using method \f(CW\*(C`M\*(C'\fR. .Sp Valid method names are .Sp .Vb 6 \& * 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 .Ve .Sp Note that Lzma compress needs \f(CW\*(C`IO::Compress::Lzma\*(C'\fR to be installed. .Sp Note that Zstd compress needs \f(CW\*(C`IO::Compress::Zstd\*(C'\fR to be installed. .Sp Default is \f(CW\*(C`deflate\*(C'\fR. .IP "\-0, \-1, \-2, \-3, \-4, \-5, \-6, \-7, \-8, \-9" 5 .IX Item "-0, -1, -2, -3, -4, -5, -6, -7, -8, -9" Sets the compression level for \f(CW\*(C`deflate\*(C'\fR. Ignored for all other compression methods. .Sp \&\f(CW\*(C`\-0\*(C'\fR means no compression and \f(CW\*(C`\-9\*(C'\fR for maximum compression. .Sp Default is 6 .IP "\-version" 5 .IX Item "-version" Display version number .IP "\-help" 5 .IX Item "-help" Display help .SS "Examples" .IX Subsection "Examples" Create a zip file bt reading daa from stdin .PP .Vb 1 \& $ echo Lorem ipsum dolor sit | perl ./bin/streamzip >abcd.zip .Ve .PP Check the contents of \f(CW\*(C`abcd,zip\*(C'\fR with the standard \f(CW\*(C`unzip\*(C'\fR utility .PP .Vb 6 \& Archive: abcd.zip \& Length Date Time Name \& \-\-\-\-\-\-\-\-\- \-\-\-\-\-\-\-\-\-\- \-\-\-\-\- \-\-\-\- \& 22 2021\-01\-08 19:45 \- \& \-\-\-\-\-\-\-\-\- \-\-\-\-\-\-\- \& 22 1 file .Ve .PP Notice how the \f(CW\*(C`Name\*(C'\fR is set to \f(CW\*(C`\-\*(C'\fR. That is the default for a few zip utilities whwre the member name is not given. .PP If you want to explicitly name the file, use the \f(CW\*(C`\-member\-name\*(C'\fR option as follows .PP .Vb 1 \& $ 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 .Ve .SS "When to write a Streamed Zip File" .IX Subsection "When to write a Streamed Zip File" A Streamed Zip File is useful in situations where you cannot seek backwards/forwards in the file. .PP 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. .PP Similarly if your workfow uses a Linux pipelined commands. .SH "SUPPORT" .IX Header "SUPPORT" General feedback/questions/bug reports should be sent to (preferred) or . .SH "AUTHOR" .IX Header "AUTHOR" Paul Marquess \fIpmqs@cpan.org\fR. .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright (c) 2019\-2021 Paul Marquess. All rights reserved. .PP This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.