NAME - Make and run Perl Archives


(Please see pp for convenient ways to make self-contained executables, scripts or PAR archives from perl programs.)

To use from ./foo.par:

    % -A./foo.par -MHello 
    % -A./foo -MHello    # the .par part is optional

Same thing, but search foo.par in the @INC;

    % -Ifoo.par -MHello 
    % -Ifoo -MHello      # ditto

Run or script/ from foo.par:

    % foo.par    # looks for '' by default,
                                # otherwise run '' 

To make a self-containing script containing a PAR file :

    % -O./ foo.par
    % ./          # same as above

To embed the necessary non-core modules and shared objects for PAR's execution (like Zlib, IO, Cwd, etc), use the -b flag:

    % -b -O./ foo.par
    % ./          # runs anywhere with core modules installed

If you also wish to embed core modules along, use the -B flag instead:

    % -B -O./ foo.par
    % ./          # runs anywhere with the perl interpreter

This is particularly useful when making stand-alone binary executables; see pp for details.


This stand-alone command offers roughly the same feature as perl -MPAR, except that it takes the pre-loaded .par files via -Afoo.par instead of -MPAR=foo.par.

Binary PAR loader (parl)

If you have a C compiler, or a pre-built binary package of PAR is available for your platform, a binary version of will also be automatically installed as parl. You can use it to run .par files:

    # runs script/ in archive, uses its lib/* as libraries
    % parl myapp.par     # runs or script/ in myapp.par
    % parl          # also runs normal perl scripts

However, if the .par archive contains either or script/, it is used instead:

    % parl myapp.par     # runs, with '' as @ARGV

Finally, the -O option makes a stand-alone binary executable from a PAR file:

    % parl -B -Omyapp myapp.par
    % ./myapp                   # run it anywhere without perl binaries

With the --par-options flag, generated binaries can act as parl to pack new binaries:

    % ./myapp --par-options -Omyap2 myapp.par   # identical to ./myapp
    % ./myapp --par-options -Omyap3 myap3.par   # now with different PAR

Stand-alone executable format

The format for the stand-alone executable is simply concatenating the following elements:

* The executable itself
Either in plain-text ( or native executable format (parl or parl.exe).
* Any number of embedded files

These are typically used for bootstrapping PAR's various XS dependencies. Each section contains:

The magic string "FILE"
Length of file name in pack('N') format plus 9
8 bytes of hex-encoded CRC32 of file content
A single slash ("/")
The file name (without path)
File length in pack('N') format
The file's content (not compressed)
* One PAR file
This is just a zip file beginning with the magic string "PK\003\004".
* Ending section
A pack('N') number of the total length of FILE and PAR sections, followed by a 8-bytes magic string: "\\012".


PAR, parl, pp


Autrijus Tang <>

PAR has a mailing list, <>, that you can write to; send an empty mail to <> to join the list and participate in the discussion.

Please send bug reports to <>.


Copyright 2002, 2003 by Autrijus Tang <>.

Neither this program nor the associated parl program impose any licensing restrictions on files generated by their execution, in accordance with the 8th article of the Artistic License:

    "Aggregation of this Package with a commercial distribution is
    always permitted provided that the use of this Package is embedded;
    that is, when no overt attempt is made to make this Package's
    interfaces visible to the end user of the commercial distribution.
    Such use shall not be construed as a distribution of this Package."

Therefore, you are absolutely free to place any license on the resulting executable, as long as the packed 3rd-party libraries are also available under the Artistic License.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.