pm_which(1p) [debian man page]
PM_WHICH(1p) User Contributed Perl Documentation PM_WHICH(1p) NAME
pm_which - find installed modules SYNOPSIS
pm_which [ options ] module(s) Returns the path to the given module(s) OPTIONS -q, --quiet Just print paths -p, --paths Just convert the module name into a relative path -a, --all Print all paths, not just the first one found -n, --namespace Print all modules in the given namespace -m Only print module names, not paths -V Show module version -I libpath Add a path to search (like perl -I) -d, --dump Dump paths that would be searched (@INC by default) -h, --help Print this message -v, --version Print version information - Read modules from stdin, one per line DESCRIPTION
This tool reports the locations of installed perl modules. By default it lists the location of each specified module that would be loaded by require. OPTION DETAILS
quiet Under quiet mode, module names are suppressed and missing modules are not reported. Normal output: $ pm_which Module::One Module::Two Missing::Module Module::One - /path/to/Module/One.pm Module::Two - /path/to/Module/Two.pm Missing::Module - not found Under --quiet: $ pm_which -q Module::One Module::Two Missing::Module /path/to/Module/One.pm /path/to/Module/Two.pm paths In "paths" mode, each module is simply converted into a relative file path. This is possible even when the module is not installed. $ pm_which -p Missing::Module Missing/Module.pm all When the "all" switch is specified, all installed modules will be reported, not just the first one. This is useful for determining when there is a module installed in multiple locations. $ pm_which -a MyModule /path/to/MyModule.pm /home/me/perl/MyModule.pm namespace Arguments are taken as namespaces to search under. $ pm_which -n MyModule MyModule - /path/to/MyModule.pm MyModule::Foo - /path/to/MyModule/Foo.pm MyModule::Foo::Bar - /path/to/MyModule/Foo/Bar.pm -m Disables printing of module paths. This is only really useful in conjunction with --namespace. $ pm_which -nm MyModule MyModule MyModule::Foo MyModule::Foo::Bar -V Prints the version of each module, according to ExtUtils::MakeMaker. $ pm_which -V MyModule MyModule - /path/to/MyModule.pm [ 1.00 ] $ pm_which -Vnm MyModule MyModule [ 1.00 ] MyModule::Foo [ 0.01 ] MyModule::Foo::Bar [ undef ] dump Dumps the paths that would be searched and exits. This is @INC modified by any -I switches. $ pm_which --dump /usr/lib/perl5/site_perl/5.8.6 /usr/lib/perl5/vendor_perl/5.8.6 ... $ pm_which -I lib --dump -I blib/lib lib blib/lib /usr/lib/perl5/site_perl/5.8.6 ... version Prints the version number of the script, plus the version and path of Module::Util that was loaded. EXIT CODES
o 0 - Everything was OK o 1 - Initialisation failed (bad switches?) o 2 - Some modules were not installed SEE ALSO
This utility comes with Module::Util. AUTHOR
Matt Lawrence <mattlaw@cpan.org> perl v5.14.2 2012-06-08 PM_WHICH(1p)
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Module::Util(3pm) User Contributed Perl Documentation Module::Util(3pm) NAME
Module::Util - Module name tools and transformations SYNOPSIS
use Module::Util qw( :all ); $valid = is_valid_module_name $potential_module; $relative_path = module_path $module_name; $file_system_path = module_fs_path $module_name; # load module at runtime require module_path $module_name; # (see perldoc -f require for limitations of this approach.) DESCRIPTION
This module provides a few useful functions for manipulating module names. Its main aim is to centralise some of the functions commonly used by modules that manipulate other modules in some way, like converting module names to relative paths. EXPORTS
Nothing by default. Use the tag :all to import all functions. FUNCTIONS
is_valid_module_name $bool = is_valid_module_name($module) Returns true if $module looks like a module name, false otherwise. module_is_loaded $abs_path_or_hook = module_is_loaded($module) Returns the %INC entry for the given module. This is usually the absolute path of the module, but sometimes it is the hook object that loaded it. See perldoc -f require Equivalent to: $INC{module_path($module)}; Except that invalid module names simply return false without generating warnings. find_installed $path = find_installed($module, [@inc]) Returns the first found installed location of the given module. This is always an absolute filesystem path, even if it is derived from a relative path in the include list. By default, @INC is searched, but this can be overridden by providing extra arguments. # look in @INC $path = find_installed("Module::Util") # look only in lib and blib/lib, not in @INC $path = find_installed("Module::Util", 'lib', 'blib/lib') Note that this will ignore any references in the search path, so it doesn't necessarily follow that the module cannot be successfully "require"d if this returns nothing. all_installed @paths = all_installed($module, [@inc]) Like find_installed, but will return multiple results if the module is installed in multiple locations. find_in_namespace @modules = find_in_namespace($namespace, [ @inc ]) Searches for modules under a given namespace in the search path (@INC by default). find_in_namespace("My::Namespace"); Returns unique installed module names under the namespace. Note that this does not include the passed-in name, even if it is the name of an installed module. Use of an empty string as the namespace returns all modules in @inc. module_path $path = module_path($module) Returns a relative path in the form used in %INC. Which I am led to believe is always a unix file path, regardless of the platform. If the argument is not a valid module name, nothing is returned. module_fs_path $path = module_fs_path($module) Like module_path, but returns the path in the native filesystem format. On unix systems, this should be identical to module_path. path_to_module $module = path_to_module($path) Transforms a relative unix file path into a module name. # Print loaded modules as module names instead of paths: print join(" ", map { path_to_module($_) } keys %INC Returns undef if the resulting module name is not valid. fs_path_to_module $module = fs_path_to_module($fs_path) Transforms relative filesystem paths into module names. # on windows: fs_path_to_module("Module\Util.pm") # returns Module::Util Returns undef if the resulting module is not valid. module_path_parts @parts = module_path_parts($module_name) Returns the module name split into parts suitable for feeding to File::Spec->catfile. module_path_parts('Module::Util') # returns ('Module', 'Util.pm') If the module name is invalid, nothing is returned. canonical_module_name $module = canonical_module_name($module); Returns the canonical module name for the given module. This basically consists of eliminating any apostrophe symbols and replacing them with '::'. canonical_module_name("Acme::Don't"); # Acme::Don::t Returns undef if the name is not valid. BUGS
None known. Please report any found. SEE ALSO
pm_which, a command-line utility for finding installed perl modules that is bundled with this module. Other, similar CPAN modules: Class::Inspector, Module::Info, Module::Require, UNIVERSAL::require, Module::Runtime perldoc -f require AUTHOR
Matt Lawrence <mattlaw@cpan.org> THANKS
Alexander Kuehne and Adrian Lai for submitting patches. COPYRIGHT
Copyright 2005 Matt Lawrence, All Rights Reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2012-06-08 Module::Util(3pm)