Provided by: perlbrew_0.98-1_all bug

NAME

       perlbrew - Perl environment manager.

SYNOPSIS

       perlbrew command syntax:

           perlbrew <command> [options] [arguments]

       Commands:

           init           Initialize perlbrew environment.
           info           Show useful information about the perlbrew installation

           install        Install perl
           uninstall      Uninstall the given installation
           available      List perls available to install
           lib            Manage local::lib directories.
           alias          Give perl installations a new name
           upgrade-perl   Upgrade the current perl

           list           List perl installations
           use            Use the specified perl in current shell
           off            Turn off perlbrew in current shell
           switch         Permanently use the specified perl as default
           switch-off     Permanently turn off perlbrew (revert to system perl)
           exec           Execute programs with specified perl environments.

           list-modules   List installed CPAN modules for the current Perl version in use
           clone-modules  Re-installs all CPAN modules from one installation to another

           self-install       Install perlbrew itself under PERLBREW_ROOT/bin
           self-upgrade       Upgrade perlbrew itself.

           install-patchperl  Install patchperl
           install-cpanm      Install cpanm, a friendly companion.
           install-cpm        Install cpm, a faster but still friendly companion.
           install-multiple   Install multiple versions and flavors of perl

           download       Download the specified perl distribution tarball.
           clean          Purge tarballs and build directories
           version        Display version
           help           Read more detailed instructions

       Generic command options:

           -q --quiet     Be quiet on informative output message.
           -v --verbose   Tell me more about it.

       See `perlbrew help` for the full documentation of perlbrew, or

       See `perlbrew help <command>` for detail description of the command.

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 multiple 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, everyone'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 -L https://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 scenario.

               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

       PERLBREW_CONFIGURE_FLAGS
           This environment variable specify the list of command like flags to pass through to
           'sh Configure'. By default it is '-de'.

       PERLBREW_CPAN_MIRROR
           The CPAN mirror url of your choice. By default, "https://cpan.metacpan.org" is used.

COMMAND: INIT

       Usage: perlbrew init

       The "init" command should be manually invoked whenever you (the perlbrew user) upgrade or
       reinstall perlbrew.

       If the upgrade is done with "self-upgrade" command, or by running the one-line installer
       manually, this command is invoked automatically.

COMMAND: INFO

       info [module]
           Usage: perlbrew info [ <module> ]

           Display useful information about the perlbrew installation.

           If a module is given the version and location of the module is displayed.

COMMAND: INSTALL

       Usage:

           perlbrew install [options] <perl-release>
           perlbrew install [options] /path/to/perl-5.14.0.tar.gz
           perlbrew install [options] /path/to/perl/git/checkout/dir
           perlbrew install [options] https://example.com/mirror/perl-5.12.3.tar.gz

       Build and install the wanted perl. The last argument can be a short string designating a
       specific version which can be known from the output of "perlbrew available", a path to a
       pre-downloaded tarball, a path to a git-checkout of perl5 repo, or a URL to a tarball.

       The format of <perl-release> looks like:

       perl-<version>
       perl-stable
       perl-blead
       <version>
       stable
       blead

       Version numbers usually look like "5.x.xx", or "perl-5.xx.x-RCx" for release candidates.

       Version "stable" is a special token that means whatever the latest stable version is at
       the moment.

       Version "blead" is also a special token that means whatever the latest version in the
       repository, which is downloaded from this specific URL regardless of mirror settings:

           https://github.com/Perl/perl5/archive/blead.tar.gz

       The specified perl is downloaded from the official CPAN website or from the mirror site
       configured before.

       Version number alone without the "perl-" prefix means the official release provided by
       perl5 porters.

       Options for "install" command:

           -f --force     Force installation
           -j $n          Parallel building and testing. ex. C<perlbrew install -j 5 perl-5.14.2>
           -n --notest    Skip testing

              --switch    Automatically switch to this Perl once successfully
                          installed, as if with `perlbrew switch <version>`

              --as        Install the given version of perl by a name.
                          ex. C<perlbrew install perl-5.6.2 --as legacy-perl>

              --noman     Skip installation of manpages

              --thread    Build perl with usethreads enabled
              --multi     Build perl with usemultiplicity enabled
              --64int     Build perl with use64bitint enabled
              --64all     Build perl with use64bitall enabled
              --ld        Build perl with uselongdouble enabled
              --debug     Build perl with DEBUGGING enabled
              --clang     Build perl using the clang compiler
              --no-patchperl
                          Skip calling patchperl

           -D,-U,-A       Switches passed to perl Configure script.
                          ex. C<perlbrew install perl-5.10.1 -D usemymalloc -U versiononly>

           --destdir $path
                          Install perl as per 'make install DESTDIR=$path'

           --sitecustomize $filename
                          Specify a file to be installed as sitecustomize.pl

           --mirror $URL
               Specify a CPAN-mirror URL. The default value of this is "https://www.cpan.org"

       By default, all installations are configured after their name like this:

           sh Configure -de -Dprefix=$PERLBREW_ROOT/perls/<name>

COMMAND: INSTALL-MULTIPLE

       Usage: perlbrew install-multiple [options] <perl-version-1> <perl-version-2> ...

       Build and install the given versions of perl.

       "install-multiple" accepts the same set of options as the command "install" plus the
       following ones:

           --both $flavor       Where $flavor is one of C<thread>, C<multi>, C<ld>,
                                C<64int>, C<64all>, C<debug> and C<clang>.

                                For every given perl version, install two
                                flavors, one with the flag C<--$flavor> set
                                and the other with out. C<--both> can be
                                passed multiple times with different values
                                and in that case, all the possible
                                combinations are generated.

           --common-variations  equivalent to C<--both thread --both ld --both 64int>

           --all-variations     generates all the possible flavor combinations

           --append $string     Appends the given string to the generated names

       For instance:

           perlbrew install-multiple 5.18.0 blead --both thread --both debug

       Installs the following perls:

           perl-blead
           perl-blead-debug
           perl-blead-thread-multi
           perl-blead-thread-multi-debug
           perl-5.18.0
           perl-5.18.0-debug
           perl-5.18.0-thread-multi
           perl-5.18.0-thread-multi-debug

       (note that the "multi" flavor is selected automatically because "thread" requires it)

       Another example using custom compilation flags:

           perlbrew install-multiple 5.18.0 --both thread -Doptimize='-O3' --append='-O3'

COMMAND: UNINSTALL

       Usage: perlbrew uninstall <name>

       Uninstalls the given perl installation. The name is the installation name as in the output
       of `perlbrew list`. This effectively deletes the specified perl installation, and all libs
       associated with it.

COMMAND: USE

       Usage: perlbrew use [perl-<version> | <version> | <name>]

       Use the given version perl in current shell. This will not effect newly opened shells.

       Without a parameter, shows the version of perl currently in use.

COMMAND: SWITCH

       Usage: perlbrew switch [ <name> ]

       Switch to the given version, and makes it the default for this and all future terminal
       sessions.

       Without a parameter, shows the version of perl currently selected.

COMMAND: LIST

       Usage: perlbrew list

       List all perl installations inside perlbrew root specified by $PERLBREW_ROOT environment
       variable. By default, the value is "~/perl5/perlbrew".

       If there are libs associated to some perl installations, they will be included as part of
       the name. The output items in this list can be the argument in various other commands.

COMMAND: AVAILABLE

       Usage: perlbrew available [--all]

       List the recently available versions of perl on CPAN.

       By default, the latest sub-version of each stable versions are listed.

       To get a list of all perls ever released, inculding development and RC versions, run the
       command with "--all" option.

COMMAND: OFF

       Usage: perlbrew off

       Temporarily disable perlbrew in the current shell. Effectively re-enables the default
       system Perl, whatever that is.

       This command works only if you add the statement of `source $PERLBREW_ROOT/etc/bashrc` in
       your shell initialization (bashrc / zshrc).

COMMAND: SWITCH-OFF

       Usage: perlbrew switch-off

       Permananently disable perlbrew. Use "switch" command to re-enable it. Invoke "use" command
       to enable it only in the current shell.

       Re-enables the default system Perl, whatever that is.

COMMAND: ALIAS

       Usage: perlbrew alias [-f] create <name> <alias>

           Create an alias for the installation named <name>.

       Usage: perlbrew alias [-f] rename <old_alias> <new_alias>

           Rename the alias to a new name.

       Usage: perlbrew alias delete <alias>

           Delete the given alias.

COMMAND: EXEC

       Usage: perlbrew exec [options] <command> <args...>

       Options for "exec" command:

           --with perl-version,... - only use these versions
           --min n.nnnnn           - minimum perl version
                                     (format is the same as in 'use 5.012')
           --max n.nnnnn           - maximum perl version
           --halt-on-error         - stop on first nonzero exit status

       Execute command for each perl installations, one by one.

       For example, run a Hello program:

           perlbrew exec perl -e 'print "Hello from $]\n"'

       The output looks like this:

           perl-5.12.2
           ==========
           Hello word from perl-5.012002

           perl-5.13.10
           ==========
           Hello word from perl-5.013010

           perl-5.14.0
           ==========
           Hello word from perl-5.014000

       Notice that the command is not executed in parallel.

       When "--with" argument is provided, the command will be only executed with the specified
       perl installations. The following command install Moose module into perl-5.12, regardless
       the current perl:

           perlbrew exec --with perl-5.12 cpanm Moose

       Multiple installation names can be provided:

           perlbrew exec --with perl-5.12,perl-5.12-debug,perl-5.14.2 cpanm Moo

       They are split by either spaces or commas. When spaces are used, it is required to quote
       the whole specification as one argument, but then commas can be used in the installation
       names:

           perlbrew exec --with '5.12 5.12,debug 5.14.2@nobita @shizuka' cpanm Moo

       As demonstrated above, "perl-" prefix can be omitted, and lib names can be specified too.
       Lib names can appear without a perl installation name, in such cases it is assumed to be
       "current perl".

       At the moment, any specified names that fails to be resolved as a real installation names
       are silently ignored in the output. Also, the command exit status are not populated back.

COMMAND: ENV

       Usage: perlbrew env [ <name> ]

       Low-level command. Invoke this command to see the list of environment variables that are
       set by "perlbrew" itself for shell integration.

       The output is something similar to this (if your shell is bash/zsh):

           export PERLBREW_ROOT=/Users/gugod/perl5/perlbrew
           export PERLBREW_VERSION=0.31
           export PERLBREW_PATH=/Users/gugod/perl5/perlbrew/bin:/Users/gugod/perl5/perlbrew/perls/current/bin
           export PERLBREW_PERL=perl-5.14.1

       tcsh / csh users should see 'setenv' statements instead of `export`.

COMMAND: SYMLINK-EXECUTABLES

       Usage: perlbrew symlink-executables [ <name> ]

       Low-level command. This command is used to create the "perl" executable symbolic link to,
       say, "perl5.13.6". This is only required for development version of perls.

       You don't need to do this unless you have been using old perlbrew to install perls, and
       you find yourself confused because the perl that you just installed appears to be missing
       after invoking `use` or `switch`. perlbrew changes its installation layout since version
       0.11, which generates symlinks to executables in a better way.

       If you just upgraded perlbrew (from 0.11 or earlier versions) and "perlbrew switch" failed
       to work after you switch to a development release of perl, say, perl-5.13.6, run this
       command:

           perlbrew symlink-executables perl-5.13.6

       This essentially creates this symlink:

          ${PERLBREW_ROOT}/perls/perl-5.13.6/bin/perl
          -> ${PERLBREW_ROOT}/perls/perl-5.13.6/bin/perl5.13.6

       Newly installed perls, whether they are development versions or not, does not need
       manually treatment with this command.

COMMAND: INSTALL-CPANM

       Usage: perlbrew install-cpanm

       Install the "cpanm" standalone executable in "$PERLBREW_ROOT/bin".

       For more rationale about the existence of this command, read
       <https://perlbrew.pl/Perlbrew-and-Friends.html>

       Usage: perlbrew install-cpm

       Install the "cpm" standalone executable in "$PERLBREW_ROOT/bin".

COMMAND: INSTALL-PATCHPERL

       Usage: perlbrew install-patchperl

       Install the "patchperl" standalone executable in "$PERLBREW_ROOT/bin".  This is
       automatically invoked if your perlbrew installation is done with the installer, but not
       with cpan.

       For more rationale about the existence of this command, read
       <https://perlbrew.pl/Perlbrew-and-Friends.html>

COMMAND: SELF-UPGRADE

       Usage: perlbrew self-upgrade

       This command upgrades Perlbrew to its latest version.

COMMAND: SELF-INSTALL

       Usage: perlbrew self-install

       NOTICE: You should not need to run this command in your daily routine.

       This command installs perlbrew itself to "$PERLBREW_ROOT/bin". It is intended to be used
       by the perlbrew installer. However, you could manually do the following to re-install only
       the "perlbrew" executable:

           curl https://raw.githubusercontent.com/gugod/App-perlbrew/master/perlbrew -o perlbrew
           perl ./perlbrew self-install

       It is slightly different from running the perlbrew installer because "patchperl" is not
       installed in this case.

COMMAND: CLEAN

       Usage: perlbrew clean

       Removes all previously downloaded Perl tarballs and build directories.

COMMAND: VERSION

       Usage: perlbrew version

       Show the version of perlbrew.

COMMAND: LIB

       Usage: perlbrew lib <action> <lib-name>

           perlbrew lib list
           perlbrew lib create <lib-name>
           perlbrew lib delete <lib-name>

       The `lib` command is used to manipulate local::lib roots inside perl installations.
       Effectively it is similar to `perl -Mlocal::lib=/path/to/lib-name`, but a little bit more
       than just that.

       A lib name can be a short name, containing alphanumeric, like 'awesome', or a full name,
       prefixed by a perl installation name and a '@' sign, for example, 'perl-5.14.2@awesome'.

       Here are some a brief examples to invoke the `lib` command:

           # Create lib perl-5.12.3@shizuka
           perlbrew lib create perl-5.12.3@shizuka

           # Create lib perl-5.14.2@nobita and perl-5.14.2@shizuka
           perlbrew use perl-5.14.2
           perlbrew lib create nobita
           perlbrew lib create shizuka

           # See the list of use/switch targets
           perlbrew list

           # Activate a lib in current shell
           perlbrew use perl-5.12.3@shizuka
           perlbrew use perl-5.14.2@nobita
           perlbrew use perl-5.14.2@shizuka

           # Activate a lib as default
           perlbrew switch perl-5.12.3@shizuka
           perlbrew switch perl-5.14.2@nobita
           perlbrew switch perl-5.14.2@shizuka

           # Delete lib perl-5.14.2@nobita and perl-5.14.2@shizuka
           perlbrew use perl-5.14.2
           perlbrew lib delete nobita
           perlbrew lib delete shizuka

           # Delete lib perl-5.12.3@shizuka
           perlbrew lib delete perl-5.12.3@shizuka

       Short lib names are local to current perl. A lib name 'nobita' can refer to
       'perl-5.12.3@nobita' or 'perl-5.14.2@nobita', whichever is activated in the current shell.

       When "use"ing or "switch"ing to a lib, always provide the long name. A simple rule: the
       argument to "use" or "switch" command should appear in the output of "perlbrew list".

COMMAND: UPGRADE-PERL

       Usage: perlbrew upgrade-perl

       Running this command upgrades the currently activated perl to its latest released
       brothers. If you have a shell with 5.32.0 activated, it upgrades it to 5.32.1.

       Minor Perl releases (ex. 5.x.*) are binary compatible with one another, so this command
       offers you the ability to upgrade older perlbrew environments in place.

COMMAND: DOWNLOAD

       Usage:
           perlbrew download <perl-release>

       Examples:
           perlbrew download perl-5.14.2
           perlbrew download perl-5.16.1
           perlbrew download perl-5.17.3

       Download the specified version of perl distribution tarball under the directory
       "$PERLBREW_ROOT/dists/".

       The argument "perl-release" should be one of the items from "perlbrew available" command.

COMMAND: LIST-MODULES

       Usage:
           perlbrew list-modules

       List all installed cpan modules for the current perl.

       This command can be used in conjunction with `perlbrew exec` to migrate your module
       installation to different perl. The following command re-installs all modules under
       perl-5.16.0:

           perlbrew list-modules | perlbrew exec --with perl-5.16.0 cpanm

       Note that this installs the latest versions of the Perl modules on the new perl, which are
       not necessarily the same module versions you had installed previously.

COMMAND: CLONE-MODULES

       Usage:

           perlbrew clone-modules [options] <destination>
           perlbrew clone-modules [options] <source> <destination>

       Options:

           --notest    Skip all module tests

       This command re-installs all CPAN modules found from one installation to another. For
       example, this lists all modules under '5.26.1' and re-installs them under '5.27.7':

           perlbrew clone-modules 5.26.1 5.27.7

       The argument "source" is optional and defaults to the currently activated one. However if
       none is activated (perlbrew is switched off), it it an error.

       Note that this does not guarantee that the versions of modules stay the same in the
       destination.

COMMAND: MAKE-SHIM

       Usage:

           perlbrew make-shim <program>
           perlbrew make-shim -o <shim-name> <program>
           perlbrew make-shim --output <shim-name> <program>

       This commands produce an executable file under current directory named "program", or
       "shim-name" if given after "--output" (or "-o" for short). The output is a shell-wrapper,
       a shim, of the named program inside current perlbrew environment.

       When the shim is executed, the original "program" is then executed with all relevant
       environment variable set to the perlbrew environment it is installed in, regardless which
       perlbrew environment is currently activated. The shim can also be moved to different
       directories and, such as the conventional "~/.local/bin", so it is always available.

       For example, you may find "tldr" from App::tldr a handy tool and decide to install it
       inside your daily working environment:

           perlbrew use perl-5.36.1
           cpm install -g App::tldr

       But when you occasionally have to switch to a different environment, "PATH" would be
       tweaked and the command "tldr" would went missing, and that is the expected outcome:

           perlbrew use perl-5.18.4
           tldr perl  #=> error: command not found

       It would be nice if "tldr" can be made universally available. One way to mitigate such
       needs is to prepare install the "tldr" program outside of "PERLBREW_ROOT", while still
       utilize perlbrew environment to run it.

       For example, prepare a conventional directory "~/.local/bin" and put that in "PATH", then:

           perlbrew use perl-5.36.1

           cd /tmp
           perlbrew make-shim tldr
           mv /tmp/tldr ~/.local/bin/tldr

       This "~/.local/bin/tldr" is a shell-wrapper of the actual "tldr" program, and it
       internally activates the perlbrew environment "perl-5.36.1". Running the tldr shim will
       then always run the actual "tldr", no matter which perlbrew environment is activated, or
       even if perlbrew is turned off. The only requirements is that the perlbrew environment
       "perl-5.36.1" and the installation of "App::tldr" has to remain.

COMMAND: MAKE-PP

       Usage:

           perlbrew make-pp <program>
           perlbrew make-pp -o <name> <program>
           perlbrew make-pp --output <name> <program>

       This commands produce an executable file under current directory named "program", or
       "name" if given after "--output" (or "-o" for short). The output is a PAR-packed version
       of the named program inside current perlbrew environment.

       This requires the current perlbrew environment to have PAR and PAR::Packer installed
       first. Otherwise "make-pp" bails out. In addition, if current perl is not a perlbrew-
       managed perl, <make-pp> also bails out.

       The produced file is a standalone binary executable containing these content:

           1. The named program
           2. perl runtime
           3. all core perl libs of current perl
           4. the entire site lib
           5. the entire local lib (managed by `perlbrew lib` command), if active.

       It is expected that the executable can then be running on a different machine of the same
       OS and arch.

       Noted that this approach is the maximum overkill for packing one program as it'll be
       definitely packaing a lot more then the exact list of runtime dependencies of the named
       program. "make-pp" is meant for a lazy solution for a non-trivial problem of perfectly
       determing the runtime dependencies of an arbitarary program.

SEE ALSO

       App::perlbrew, App::cpanminus, Devel::PatchPerl