Provided by: perlbrew_0.98-1_all 
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
perl v5.36.0 2023-08-12 PERLBREW(1p)