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Manage perl installations in your $HOME

README
Name:
    App::perlbrew - Manage perl installations in your $HOME

Description:
    perlbrew is a program to automate the building and installation of perl
    in an easy way. It installs everything to "~/perl5/perlbrew", and
    requires you to tweak your PATH by including a bashrc/cshrc file it
    provides. You then can benefit from not having to run 'sudo' commands to
    install cpan modules because those are installed inside your HOME too.
    It provides multiple isolated perl environments, and a mechanism for you
    to switch between them.

    For the documentation of perlbrew usage see perlbrew command on CPAN, or
    by running "perlbrew help". The following documentation features the API
    of "App::perlbrew" module, and may not be remotely close to what your
    want to read.

Installation:
    It is the simpleist to use the perlbrew installer, just paste this
    statement to your terminal:

        curl -kL http://install.perlbrew.pl | bash

    Or this one, if you have "fetch" (default on FreeBSD):

        fetch -o- http://install.perlbrew.pl | sh

    After that, "perlbrew" installs itself to "~/perl5/perlbrew/bin", and
    you should follow the instruction on screen to modify your shell rc file
    to put it in your PATH.

    The installed perlbrew command is a standalone executable that can be
    run with system perl. The minimun system perl version requirement is
    5.8.0, which should be good enough for most of the OSes these days.

    A packed version of "patchperl" to "~/perl5/perlbrew/bin", which is
    required to build old perls.

    The directory "~/perl5/perlbrew" will contain all install perl
    executables, libraries, documentations, lib, site_libs. In the
    documentation, that directory is referred as "perlbrew root". If you
    need to set it to somewhere else because, say, your HOME has limited
    quota, you can do that by setting "PERLBREW_ROOT" environment variable
    before running the installer:

        export PERLBREW_ROOT=/opt/perl5
        curl -kL http://install.perlbrew.pl | bash

    You may also install perlbrew from CPAN:

        cpan App::perlbrew

    In this case, the perlbrew command is installed as "/usr/bin/perlbrew"
    or "/usr/local/bin/perlbrew" or others, depending on the location of
    your system perl installation.

    Please make sure not to run this with one of the perls brewed with
    perlbrew. It's the best to turn perlbrew off before you run that, if
    you're upgrading.

        perlbrew off
        cpan App::perlbrew

    You should always use system cpan (like /usr/bin/cpan) to install
    "App::perlbrew" because it will be installed under a system PATH like
    "/usr/bin", which is not affected by perlbrew "switch" or "use" command.

    The "self-upgrade" command will not upgrade the perlbrew installed by
    cpan command, but it is also easy to upgrade perlbrew by running `cpan
    App::perlbrew` again.

Configuration:
    PERLBREW_ROOT
        By default, perlbrew builds and installs perls into
        "$ENV{HOME}/perl5/perlbrew" directory. To use a different directory,
        set this environment variable in your "bashrc" to the directory in
        your shell RC before sourcing perlbrew's RC.

        It is possible to share one perlbrew root with multilpe user account
        on the same machine. Therefore people do not have to install the
        same version of perl over an over. Let's say "/opt/perl5" is the
        directory we want to share. All users should be able append this
        snippet to their bashrc to make it effective:

            export PERLBREW_ROOT=/opt/perl5
            source ${PERLBREW_ROOT}/etc/bashrc

        After doing so, everone's PATH should include "/opt/perl5/bin" and
        "/opt/perl5/perls/${PERLBREW_PERL}/bin". Each user can invoke
        "perlbrew switch" and "perlbrew use" to independently switch to
        different perl environment of their choice. However, only the user
        with write permission to $PERLBREW_ROOT may install CPAN modules.
        This is both good and bad depending on the working convention of
        your team.

        If you wish to install CPAN modules only for yourself, you should
        use the "lib" command to construct a personal local::lib
        environment. local::lib environments are personal, and are not
        shared between different users. For more detail, read "perlbrew help
        lib" and the documentation of local::lib.

        If you want even a cooler module isolation and wish to install CPAN
        modules used for just one project, you should use carton for this
        purpose.

        It is also possible to set this variable before installing perlbrew
        to make perlbrew install itself under the given PERLBREW_ROOT:

            export PERLBREW_ROOT=/opt/perl5
            curl -kL http://install.perlbrew.pl | bash

        After doing this, the perlbrew executable is installed as
        "/opt/perl5/bin/perlbrew"

    PERLBREW_HOME
        By default, perlbrew stores per-user setting to
        "$ENV{HOME}/.perlbrew" directory. To use a different directory, set
        this environment variable in your shell RC before sourcing
        perlbrew's RC.

        In some cases, say, your home directory is on NFS and shared across
        multiple machines, you may wish to have several different perlbrew
        setting per-machine. To do so, you can use the "PERLBREW_HOME"
        environment variable to tell perlbrew where to look for the
        initialization file. Here's a brief bash snippet for the given
        senario.

            if [ "$(hostname)" == "machine-a" ]; then
                export PERLBREW_HOME=~/.perlbrew-a
            elif [ "$(hostname)" == "machine-b" ]; then
                export PERLBREW_HOME=~/.perlbrew-b
            fi

            source ~/perl5/perlbrew/etc/bashrc

Project Development:
    perlbrew project uses github
    <http://github.com/gugod/App-perlbrew/issues> and RT
    <https://rt.cpan.org/Dist/Display.html?Queue=App-perlbrew> for issue
    tracking. Issues sent to these two systems will eventually be reviewed
    and handled.

    See <https://github.com/gugod/App-perlbrew/contributors> for a list of
    project contributors.

Author:
    Kang-min Liu "<gugod@gugod.org>"

Copyright:
    Copyright (c) 2010, 2011, 2012 Kang-min Liu "<gugod@gugod.org>".

Disclaimer of Warranty:
    BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
    FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
    OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
    PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
    EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
    ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH
    YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
    NECESSARY SERVICING, REPAIR, OR CORRECTION.

    IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
    WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
    REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE
    TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR
    CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
    SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
    RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
    FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
    SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
    DAMAGES.

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