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I got an e-mail from JamesYoungman while TWiki.org was out of order. It is a nice little script to find referenced but not defined WikiWords. I am posting it here, but I have not tested it out.

James Youngman wrote: >
> I also wrote a script to find referenced but not defined WikiWords.
> I'm sure that one already exists but since you temporarily lost your
> content, I didn't find it on the TWiki website. Anyway, in case it's
> helpful at all, here it is.

#! /usr/bin/perl -w
    eval 'exec /usr/bin/perl -S $0 ${1+"$@"}'
        if 0; #$running_under_some_shell

use strict;
use File::Find ();
# Set the variable $File::Find::dont_use_nlink if you're using AFS,
# since AFS cheats.

my $datadir = "/home/james/twiki/data";
my @weblist = ( "Know", "Main", "Test", "Trash", "TWiki" );

# Changing the value to 0 seems to make things work  -- Main.KevinCounts - 10 Jan 2005
# my $dangle_threshold = 1;

my $dangle_threshold = 0;

my (%got, %dangling);

my $compundRegexp =
my $simpleRegexp =

foreach my $current_web ( @weblist ) {
    my $top = $datadir . "/" . $current_web;
    %got = ();      File::Find::find({wanted => \&remember_got}, $top);
    %dangling = (); File::Find::find({wanted => \&search_it   }, $top);
    foreach (sort { $dangling{$b} <=> $dangling{$a} } keys %dangling) {
        if ($dangling{$_} > $dangle_threshold) {
            printf("%3d : %s.%s\n", $dangling{$_}, $current_web, $_);
    print "\n";

sub remember_got { if (m/([^\/]+)\.txt\z/s) { $got{$1} = 1; } }
sub compound { }   # ToDo: implement me later.
sub simple { if (!$got{$_[0]}) { ++$dangling{$_[0]}; } }

sub search_it {
    if (m/([^\/]+)\.txt\z/s) {
        open INFILE, "<$_";
        while (<INFILE>) {
        close INFILE;

-- PeterThoeny - 24 Oct 2001

I tried this on my March 2001 beta installation and it didn't generate any output, despite there being quite a few dangling references. I got a vast number of calls to compound(), which may be the problem, and a warning that 'Use of implicit split to @_ is deprecated' on the two assignments to the *Regexp variables.

-- RichardDonkin - 26 Oct 2001

Changing the dangle_threshhold to 0 makes it work more as expected. I'm running it on the 01Feb2003 release under Red Hat 7.3, Perl version 5.6.1.

-- CarlPatten - 17 Feb 2004

I experienced the same results as Carl. I changed the code but left a comment that it was edited. I'm glad to find this code - I had just read the Wiki Way book and was searching to no avail for the unreferenced internal links search.

-- KevinCounts - 10 Jan 2005

I just tried this and found that it is returning things that are wiki words, but are explicitly not linked with a or a !. I don't know enough perl to fix that.

-- JeffersonCowart - 20 Mar 2005

So suppose I want to try this script, what should I do?

  1. create a file with the above script in my /twiki/bin/ directory
  2. change the hardcoded datadir location and save file
  3. fix the file permissions
  4. access the script in some way from within TWiki

Who can help this unknowing user? Thanks! smile

-- JosMaccabiani

Jos - you are right from 1-3. This is however, not a cgi-script, it is command line tool that will give you a list from the console. - so as step 4 - run script from where you created it (you don't even need to have it in the same directory chain as twiki at all

-- SvenDowideit - 02 Jul 2005

Thanks Sven. I discovered ListingAllUndefinedButUsedWikiWords and find it easier to adept to my needs, so i'll try that first

-- JosMaccabiani - 02 Jul 2005

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Topic revision: r9 - 2005-07-02 - JosMaccabiani
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