How can I find out where a Perl module is installed?

Mostly I use perldoc to get a location:

$ perldoc -l Module

You can also get module details with the cpan tool that comes with Perl:

$ cpan -D Time::HiRes
Time::HiRes
-------------------------------------------------------------------------
    High resolution time, sleep, and alarm
    J/JH/JHI/Time-HiRes-1.9719.tar.gz
    /usr/local/perls/perl-5.10.0/lib/5.10.0/darwin-2level/Time/HiRes.pm
    Installed: 1.9711
    CPAN:      1.9719  Not up to date
    Andrew Main (Zefram) (ZEFRAM)
    [email protected]

It even works on modules that you haven't installed:

$ cpan -D Win32::Process
Win32::Process
-------------------------------------------------------------------------
    Interface to Win32 Process functions
    J/JD/JDB/Win32-Process-0.14.tar.gz
    Installed: 
    CPAN:      0.14  Not up to date
    Jan Dubois (JDB)
    [email protected]

I think maybe I need an XML option like svn.

perl -MTime::HiRes -e 'print $INC{"Time/HiRes.pm"}' or perldoc -l Time::HiRes

Note: This solution proposes use of a (self-authored) utility that you must download. While it offers what I believe to be helpful features, installing a third-party solution first is not an option for everyone.

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I've created whichpm, a cross-platform CLI (Linux, macOS, Window) that locates installed Perl modules by module (package) name, and optionally reports information about them, including detection of accidental duplicates.

Examples

# Locate the Data::Dumper module.
$ whichpm Data::Dumper
/usr/lib/perl/5.18/Data/Dumper.pm

# Locate the Data::Dumper module, and also print
# version information and core-module status.
$ whichpm -v Data::Dumper
Data::Dumper    2.145   core>=5.005 /usr/lib/perl/5.18/Data/Dumper.pm

# Locate the Data::Dumper module and open it in your system's default text
# editor.
$ whichpm -e Data::Dumper

# Look for accidental duplicates of the Foo::Bar module.
# Normally, only 1 path should be returned.
$ whichpm -a Foo::Bar
/usr/lib/perl/5.18/Foo/Bar.pm
./Foo/Bar.pm

# Print the paths of all installed modules.
$ whichpm -a

Installation

Prerequisites: Linux, macOS, or Windows, with Perl v5.4.50 or higher installed.

Installation from the npm registry

With Node.js or io.js installed, install the package as follows:

[sudo] npm install whichpm -g

Manual installation (macOS and Linux)

• Download the CLI as whichpm.
• Make it executable with chmod +x whichpm.
• Move it or symlink it to a folder in your $PATH, such as /usr/local/bin (OSX) or /usr/bin (Linux).