ExtUtils::Packlist(3)  Perl Programmers Reference Guide  ExtUtils::Packlist(3)

       ExtUtils::Packlist - manage .packlist files

          use ExtUtils::Packlist;
          my ($pl) = ExtUtils::Packlist->new('.packlist');
          my @missing_files = $pl->validate();

          $pl->{'/some/other/file/name'} = { type => 'file',
                                             from => '/some/file' };

       ExtUtils::Packlist provides a standard way to manage .packlist files.
       Functions are provided to read and write .packlist files.  The original
       .packlist format is a simple list of absolute pathnames, one per line.
       In addition, this package supports an extended format, where as well as
       a filename each line may contain a list of attributes in the form of a
       space separated list of key=value pairs.  This is used by the
       installperl script to differentiate between files and links, for

       The hash reference returned by the new() function can be used to
       examine and modify the contents of the .packlist.  Items may be
       added/deleted from the .packlist by modifying the hash.  If the value
       associated with a hash key is a scalar, the entry written to the
       .packlist by any subsequent write() will be a simple filename.  If the
       value is a hash, the entry written will be the filename followed by the
       key=value pairs from the hash.  Reading back the .packlist will
       recreate the original entries.

            This takes an optional parameter, the name of a .packlist.  If the
            file exists, it will be opened and the contents of the file will
            be read.  The new() method returns a reference to a hash.  This
            hash holds an entry for each line in the .packlist.  In the case
            of old-style .packlists, the value associated with each key is
            undef.  In the case of new-style .packlists, the value associated
            with each key is a hash containing the key=value pairs following
            the filename in the .packlist.

            This takes an optional parameter, the name of the .packlist to be
            read.  If no file is specified, the .packlist specified to new()
            will be read.  If the .packlist does not exist, Carp::croak will
            be called.

            This takes an optional parameter, the name of the .packlist to be
            written.  If no file is specified, the .packlist specified to
            new() will be overwritten.

            This checks that every file listed in the .packlist actually
            exists.  If an argument which evaluates to true is given, any
            missing files will be removed from the internal hash.  The return
            value is a list of the missing files, which will be empty if they
            all exist.

            This returns the name of the associated .packlist file

       Here's modrm, a little utility to cleanly remove an installed module.

           #!/usr/local/bin/perl -w

           use strict;
           use IO::Dir;
           use ExtUtils::Packlist;
           use ExtUtils::Installed;

           sub emptydir($) {
               my ($dir) = @_;
               my $dh = IO::Dir->new($dir) ⎪⎪ return(0);
               my @count = $dh->read();
               return(@count == 2 ? 1 : 0);

           # Find all the installed packages
           print("Finding all installed modules...\n");
           my $installed = ExtUtils::Installed->new();

           foreach my $module (grep(!/^Perl$/, $installed->modules())) {
              my $version = $installed->version($module) ⎪⎪ "???";
              print("Found module $module Version $version\n");
              print("Do you want to delete $module? [n] ");
              my $r = <STDIN>; chomp($r);
              if ($r && $r =~ /^y/i) {
                 # Remove all the files
                 foreach my $file (sort($installed->files($module))) {
                    print("rm $file\n");
                 my $pf = $installed->packlist($module)->packlist_file();
                 print("rm $pf\n");
                 foreach my $dir (sort($installed->directory_tree($module))) {
                    if (emptydir($dir)) {
                       print("rmdir $dir\n");

       Alan Burlison <Alan.Burlison@uk.sun.com>

3rd Berkeley Distribution    perl 5.005, patch 02        ExtUtils::Packlist(3)