--- /dev/null
+#! /usr/bin/perl
+#
+# groupstats.pl
+#
+# This script will get statistical data on newgroup usage
+# from a database.
+#
+# It is part of the NewsStats package.
+#
+# Copyright (c) 2010-2013 Thomas Hochstein <thh@inter.net>
+#
+# It can be redistributed and/or modified under the same terms under
+# which Perl itself is published.
+
+BEGIN {
+ our $VERSION = "0.01";
+ use File::Basename;
+ # we're in .../bin, so our module is in ../lib
+ push(@INC, dirname($0).'/../lib');
+}
+use strict;
+use warnings;
+
+use NewsStats qw(:DEFAULT :TimePeriods :Output :SQLHelper ReadGroupList);
+
+use DBI;
+use Getopt::Long qw(GetOptions);
+Getopt::Long::config ('bundling');
+
+################################# Main program #################################
+
+### read commandline options
+my ($OptBoundType,$OptCaptions,$OptCheckgroupsFile,$OptComments,
+ $OptFileTemplate,$OptFormat,$OptGroupBy,$OptGroupsDB,$LowBound,$OptMonth,
+ $OptNewsgroups,$OptOrderBy,$OptReportType,$OptSums,$UppBound);
+GetOptions ('b|boundary=s' => \$OptBoundType,
+ 'c|captions!' => \$OptCaptions,
+ 'checkgroups=s' => \$OptCheckgroupsFile,
+ 'comments!' => \$OptComments,
+ 'filetemplate=s' => \$OptFileTemplate,
+ 'f|format=s' => \$OptFormat,
+ 'g|group-by=s' => \$OptGroupBy,
+ 'groupsdb=s' => \$OptGroupsDB,
+ 'l|lower=i' => \$LowBound,
+ 'm|month=s' => \$OptMonth,
+ 'n|newsgroups=s' => \$OptNewsgroups,
+ 'o|order-by=s' => \$OptOrderBy,
+ 'r|report=s' => \$OptReportType,
+ 's|sums!' => \$OptSums,
+ 'u|upper=i' => \$UppBound,
+ 'h|help' => \&ShowPOD,
+ 'V|version' => \&ShowVersion) or exit 1;
+# parse parameters
+# $OptComments defaults to TRUE
+$OptComments = 1 if (!defined($OptComments));
+# force --nocomments when --filetemplate is used
+$OptComments = 0 if ($OptFileTemplate);
+# parse $OptBoundType
+if ($OptBoundType) {
+ if ($OptBoundType =~ /level/i) {
+ $OptBoundType = 'level';
+ } elsif ($OptBoundType =~ /av(era)?ge?/i) {
+ $OptBoundType = 'average';
+ } elsif ($OptBoundType =~ /sums?/i) {
+ $OptBoundType = 'sum';
+ } else {
+ $OptBoundType = 'default';
+ }
+}
+# parse $OptReportType
+if ($OptReportType) {
+ if ($OptReportType =~ /av(era)?ge?/i) {
+ $OptReportType = 'average';
+ } elsif ($OptReportType =~ /sums?/i) {
+ $OptReportType = 'sum';
+ } else {
+ $OptReportType = 'default';
+ }
+}
+# read list of newsgroups from --checkgroups
+# into a hash reference
+my $ValidGroups = &ReadGroupList($OptCheckgroupsFile) if $OptCheckgroupsFile;
+
+### read configuration
+my %Conf = %{ReadConfig('')};
+
+### override configuration via commandline options
+my %ConfOverride;
+$ConfOverride{'DBTableGrps'} = $OptGroupsDB if $OptGroupsDB;
+&OverrideConfig(\%Conf,\%ConfOverride);
+
+### init database
+my $DBHandle = InitDB(\%Conf,1);
+
+### get time period and newsgroups, prepare SQL 'WHERE' clause
+# get time period
+# and set caption for output and expression for SQL 'WHERE' clause
+my ($CaptionPeriod,$SQLWherePeriod) = &GetTimePeriod($OptMonth);
+# bail out if --month is invalid
+&Bleat(2,"--month option has an invalid format - ".
+ "please use 'YYYY-MM', 'YYYY-MM:YYYY-MM' or 'ALL'!") if !$CaptionPeriod;
+# get list of newsgroups and set expression for SQL 'WHERE' clause
+# with placeholders as well as a list of newsgroup to bind to them
+my ($SQLWhereNewsgroups,@SQLBindNewsgroups);
+if ($OptNewsgroups) {
+ ($SQLWhereNewsgroups,@SQLBindNewsgroups) = &SQLGroupList($OptNewsgroups);
+ # bail out if --newsgroups is invalid
+ &Bleat(2,"--newsgroups option has an invalid format!")
+ if !$SQLWhereNewsgroups;
+}
+
+### build SQL WHERE clause (and HAVING clause, if needed)
+my ($SQLWhereClause,$SQLHavingClause);
+# $OptBoundType 'level'
+if ($OptBoundType and $OptBoundType ne 'default') {
+ $SQLWhereClause = SQLBuildClause('where',$SQLWherePeriod,
+ $SQLWhereNewsgroups,&SQLHierarchies($OptSums));
+ $SQLHavingClause = SQLBuildClause('having',&SQLSetBounds($OptBoundType,
+ $LowBound,$UppBound));
+# $OptBoundType 'threshold' / 'default' or none
+} else {
+ $SQLWhereClause = SQLBuildClause('where',$SQLWherePeriod,
+ $SQLWhereNewsgroups,&SQLHierarchies($OptSums),
+ &SQLSetBounds('default',$LowBound,$UppBound));
+}
+
+### get sort order and build SQL 'ORDER BY' clause
+# default to 'newsgroup' for $OptBoundType 'level' or 'average'
+$OptGroupBy = 'newsgroup' if (!$OptGroupBy and
+ $OptBoundType and $OptBoundType ne 'default');
+# force to 'month' for $OptReportType 'average' or 'sum'
+$OptGroupBy = 'month' if ($OptReportType and $OptReportType ne 'default');
+# parse $OptGroupBy to $GroupBy, create ORDER BY clause $SQLOrderClause
+my ($GroupBy,$SQLOrderClause) = SQLSortOrder($OptGroupBy, $OptOrderBy);
+# $GroupBy will contain 'month' or 'newsgroup' (parsed result of $OptGroupBy)
+# set it to 'month' or 'key' for OutputData()
+$GroupBy = ($GroupBy eq 'month') ? 'month' : 'key';
+
+### get report type and build SQL 'SELECT' query
+my $SQLSelect;
+my $SQLGroupClause = '';
+my $Precision = 0; # number of digits right of decimal point for output
+if ($OptReportType and $OptReportType ne 'default') {
+ $SQLGroupClause = 'GROUP BY newsgroup';
+ # change $SQLOrderClause: replace everything before 'postings'
+ $SQLOrderClause =~ s/BY.+postings/BY postings/;
+ if ($OptReportType eq 'average') {
+ $SQLSelect = "'All months',newsgroup,AVG(postings)";
+ $Precision = 2;
+ # change $SQLOrderClause: replace 'postings' with 'AVG(postings)'
+ $SQLOrderClause =~ s/postings/AVG(postings)/;
+ } elsif ($OptReportType eq 'sum') {
+ $SQLSelect = "'All months',newsgroup,SUM(postings)";
+ # change $SQLOrderClause: replace 'postings' with 'SUM(postings)'
+ $SQLOrderClause =~ s/postings/SUM(postings)/;
+ }
+ } else {
+ $SQLSelect = 'month,newsgroup,postings';
+};
+
+### get length of longest newsgroup name delivered by query
+### for formatting purposes
+my $Field = ($GroupBy eq 'month') ? 'newsgroup' : 'month';
+my ($MaxLength,$MaxValLength) = &GetMaxLength($DBHandle,$Conf{'DBTableGrps'},
+ $Field,'postings',$SQLWhereClause,
+ $SQLHavingClause,
+ @SQLBindNewsgroups);
+
+### build and execute SQL query
+my ($DBQuery);
+# special query preparation for $OptBoundType 'level', 'average' or 'sums'
+if ($OptBoundType and $OptBoundType ne 'default') {
+ # prepare and execute first query:
+ # get list of newsgroups meeting level conditions
+ $DBQuery = $DBHandle->prepare(sprintf('SELECT newsgroup FROM %s.%s %s '.
+ 'GROUP BY newsgroup %s',
+ $Conf{'DBDatabase'},$Conf{'DBTableGrps'},
+ $SQLWhereClause,$SQLHavingClause));
+ $DBQuery->execute(@SQLBindNewsgroups)
+ or &Bleat(2,sprintf("Can't get groups data for %s from %s.%s: %s\n",
+ $CaptionPeriod,$Conf{'DBDatabase'},$Conf{'DBTableGrps'},
+ $DBI::errstr));
+ # add newsgroups to a comma-seperated list ready for IN(...) query
+ my $GroupList;
+ while (my ($Newsgroup) = $DBQuery->fetchrow_array) {
+ $GroupList .= ',' if $GroupList;
+ $GroupList .= "'$Newsgroup'";
+ };
+ # enhance $WhereClause
+ if ($GroupList) {
+ $SQLWhereClause = SQLBuildClause('where',$SQLWhereClause,
+ sprintf('newsgroup IN (%s)',$GroupList));
+ } else {
+ # condition cannot be satisfied;
+ # force query to fail by adding '0=1'
+ $SQLWhereClause = SQLBuildClause('where',$SQLWhereClause,'0=1');
+ }
+}
+
+# prepare query
+$DBQuery = $DBHandle->prepare(sprintf('SELECT %s FROM %s.%s %s %s %s',
+ $SQLSelect,
+ $Conf{'DBDatabase'},$Conf{'DBTableGrps'},
+ $SQLWhereClause,$SQLGroupClause,
+ $SQLOrderClause));
+
+# execute query
+$DBQuery->execute(@SQLBindNewsgroups)
+ or &Bleat(2,sprintf("Can't get groups data for %s from %s.%s: %s\n",
+ $CaptionPeriod,$Conf{'DBDatabase'},$Conf{'DBTableGrps'},
+ $DBI::errstr));
+
+### output results
+# set default to 'pretty'
+$OptFormat = 'pretty' if !$OptFormat;
+# print captions if --caption is set
+if ($OptCaptions && $OptComments) {
+ # print time period with report type
+ my $CaptionReportType= '(number of postings for each month)';
+ if ($OptReportType and $OptReportType ne 'default') {
+ $CaptionReportType= '(average number of postings for each month)'
+ if $OptReportType eq 'average';
+ $CaptionReportType= '(number of all postings for that time period)'
+ if $OptReportType eq 'sum';
+ }
+ printf("# ----- Report for %s %s\n",$CaptionPeriod,$CaptionReportType);
+ # print newsgroup list if --newsgroups is set
+ printf("# ----- Newsgroups: %s\n",join(',',split(/:/,$OptNewsgroups)))
+ if $OptNewsgroups;
+ # print boundaries, if set
+ my $CaptionBoundary= '(counting only month fulfilling this condition)';
+ if ($OptBoundType and $OptBoundType ne 'default') {
+ $CaptionBoundary= '(every single month)' if $OptBoundType eq 'level';
+ $CaptionBoundary= '(on average)' if $OptBoundType eq 'average';
+ $CaptionBoundary= '(all month summed up)' if $OptBoundType eq 'sum';
+ }
+ printf("# ----- Threshold: %s %s x %s %s %s\n",
+ $LowBound ? $LowBound : '',$LowBound ? '=>' : '',
+ $UppBound ? '<=' : '',$UppBound ? $UppBound : '',$CaptionBoundary)
+ if ($LowBound or $UppBound);
+ # print primary and secondary sort order
+ printf("# ----- Grouped by %s (%s), sorted %s%s\n",
+ ($GroupBy eq 'month') ? 'Months' : 'Newsgroups',
+ ($OptGroupBy and $OptGroupBy =~ /-?desc$/i) ? 'descending' : 'ascending',
+ ($OptOrderBy and $OptOrderBy =~ /posting/i) ? 'by number of postings ' : '',
+ ($OptOrderBy and $OptOrderBy =~ /-?desc$/i) ? 'descending' : 'ascending');
+}
+
+# output data
+&OutputData($OptFormat,$OptComments,$GroupBy,$Precision,
+ $OptCheckgroupsFile ? $ValidGroups : '',
+ $OptFileTemplate,$DBQuery,$MaxLength,$MaxValLength);
+
+### close handles
+$DBHandle->disconnect;
+
+__END__
+
+################################ Documentation #################################
+
+=head1 NAME
+
+groupstats - create reports on newsgroup usage
+
+=head1 SYNOPSIS
+
+B<groupstats> [B<-Vhcs> B<--comments>] [B<-m> I<YYYY-MM>[:I<YYYY-MM>] | I<all>] [B<-n> I<newsgroup(s)>] [B<--checkgroups> I<checkgroups file>] [B<-r> I<report type>] [B<-l> I<lower boundary>] [B<-u> I<upper boundary>] [B<-b> I<boundary type>] [B<-g> I<group by>] [B<-o> I<order by>] [B<-f> I<output format>] [B<--filetemplate> I<filename template>] [B<--groupsdb> I<database table>]
+
+=head1 REQUIREMENTS
+
+See L<doc/README>.
+
+=head1 DESCRIPTION
+
+This script create reports on newsgroup usage (number of postings per
+group per month) taken from result tables created by
+B<gatherstats.pl>.
+
+=head2 Features and options
+
+=head3 Time period and newsgroups
+
+The time period to act on defaults to last month; you can assign another
+time period or a single month (or drop all time constraints) via the
+B<--month> option (see below).
+
+B<groupstats> will process all newsgroups by default; you can limit
+processing to only some newsgroups by supplying a list of those groups via
+B<--newsgroups> option (see below). You can include hierarchy levels in
+the output by adding the B<--sums> switch (see below). Optionally
+newsgroups not present in a checkgroups file can be excluded from output,
+sse B<--checkgroups> below.
+
+=head3 Report type
+
+You can choose between different B<--report> types: postings per month,
+average postings per month or all postings summed up; for details, see
+below.
+
+=head3 Upper and lower boundaries
+
+Furthermore you can set an upper and/or lower boundary to exclude some
+results from output via the B<--lower> and B<--upper> options,
+respectively. By default, all newsgroups with more and/or less postings
+per month will be excluded from the result set (i.e. not shown and not
+considered for average and sum reports). You can change the meaning of
+those boundaries with the B<--boundary> option. For details, please see
+below.
+
+=head3 Sorting and formatting the output
+
+By default, all results are grouped by month; you can group results by
+newsgroup instead via the B<--groupy-by> option. Within those groups, the
+list of newsgroups (or months) is sorted alphabetically (or
+chronologically, respectively) ascending. You can change that order (and
+sort by number of postings) with the B<--order-by> option. For details and
+exceptions, please see below.
+
+The results will be formatted as a kind of table; you can change the
+output format to a simple list or just a list of newsgroups and number of
+postings with the B<--format> option. Captions will be added by means of
+the B<--caption> option; all comments (and captions) can be supressed by
+using B<--nocomments>.
+
+Last but not least you can redirect all output to a number of files, e.g.
+one for each month, by submitting the B<--filetemplate> option, see below.
+Captions and comments are automatically disabled in this case.
+
+=head2 Configuration
+
+B<groupstats> will read its configuration from F<newsstats.conf>
+which should be present in the same directory via Config::Auto.
+
+See doc/INSTALL for an overview of possible configuration options.
+
+You can override some configuration options via the B<--groupsdb> option.
+
+=head1 OPTIONS
+
+=over 3
+
+=item B<-V>, B<--version>
+
+Print out version and copyright information and exit.
+
+=item B<-h>, B<--help>
+
+Print this man page and exit.
+
+=item B<-m>, B<--month> I<YYYY-MM[:YYYY-MM]|all>
+
+Set processing period to a single month in YYYY-MM format or to a time
+period between two month in YYYY-MM:YYYY-MM format (two month, separated
+by a colon). By using the keyword I<all> instead, you can set no
+processing period to process the whole database.
+
+=item B<-n>, B<--newsgroups> I<newsgroup(s)>
+
+Limit processing to a certain set of newsgroups. I<newsgroup(s)> can
+be a single newsgroup name (de.alt.test), a newsgroup hierarchy
+(de.alt.*) or a list of either of these, separated by colons, for
+example
+
+ de.test:de.alt.test:de.newusers.*
+
+=item B<-s>, B<--sums|--nosums> (sum per hierarchy level)
+
+Include "virtual" groups for every hierarchy level in output, for
+example:
+
+ de.alt.ALL 10
+ de.alt.test 5
+ de.alt.admin 7
+
+See the B<gatherstats> man page for details.
+
+=item B<--checkgroups> I<filename>
+
+Restrict output to those newgroups present in a file in checkgroups format
+(one newgroup name per line; everything after the first whitespace on each
+line is ignored). All other newsgroups will be removed from output.
+
+Contrary to B<gatherstats>, I<filename> is not a template, but refers to
+a single file in checkgroups format.
+
+=item B<-r>, B<--report> I<default|average|sums>
+
+Choose the report type: I<default>, I<average> or I<sums>
+
+By default, B<groupstats> will report the number of postings for each
+newsgroup in each month. But it can also report the average number of
+postings per group for all months or the total sum of postings per group
+for all months.
+
+For report types I<average> and I<sums>, the B<group-by> option has no
+meaning and will be silently ignored (see below).
+
+=item B<-l>, B<--lower> I<lower boundary>
+
+Set the lower boundary. See B<--boundary> below.
+
+=item B<-l>, B<--upper> I<upper boundary>
+
+Set the upper boundary. See B<--boundary> below.
+
+=item B<-b>, B<--boundary> I<boundary type>
+
+Set the boundary type to one of I<default>, I<level>, I<average> or
+I<sums>.
+
+By default, all newsgroups with more postings per month than the upper
+boundary and/or less postings per month than the lower boundary will be
+excluded from further processing. For the default report that means each
+month only newsgroups with a number of postings between the boundaries
+will be displayed. For the other report types, newsgroups with a number of
+postings exceeding the boundaries in all (!) months will not be
+considered.
+
+For example, lets take a list of newsgroups like this:
+
+ ----- 2012-01:
+ de.comp.datenbanken.misc 6
+ de.comp.datenbanken.ms-access 84
+ de.comp.datenbanken.mysql 88
+ ----- 2012-02:
+ de.comp.datenbanken.misc 8
+ de.comp.datenbanken.ms-access 126
+ de.comp.datenbanken.mysql 21
+ ----- 2012-03:
+ de.comp.datenbanken.misc 24
+ de.comp.datenbanken.ms-access 83
+ de.comp.datenbanken.mysql 36
+
+With C<groupstats --month 2012-01:2012-03 --lower 25 --report sums>,
+you'll get the following result:
+
+ ----- All months:
+ de.comp.datenbanken.ms-access 293
+ de.comp.datenbanken.mysql 124
+
+de.comp.datenbanken.misc has not been considered even though it has 38
+postings in total, because it has less than 25 postings in every single
+month. If you want to list all newsgroups with more than 25 postings
+I<in total>, you'll have to set the boundary type to I<sum>, see below.
+
+A boundary type of I<level> will show only those newsgroups - at all -
+that satisfy the boundaries in each and every single month. With the above
+list of newsgroups and
+C<groupstats --month 2012-01:2012-03 --lower 25 --boundary level --report sums>,
+you'll get this result:
+
+ ----- All months:
+ de.comp.datenbanken.ms-access 293
+
+de.comp.datenbanken.mysql has not been considered because it had less than
+25 postings in 2012-02 (only).
+
+You can use that to get a list of newsgroups that have more (or less) then
+x postings in every month during the whole reporting period.
+
+A boundary type of I<average> will show only those newsgroups - at all -that
+satisfy the boundaries on average. With the above list of newsgroups and
+C<groupstats --month 2012-01:2012-03 --lower 25 --boundary avg --report sums>,
+you'll get this result:
+
+ ----- All months:
+ de.comp.datenbanken.ms-access 293
+ de.comp.datenbanken.mysql 145
+
+The average number of postings in the three groups is:
+
+ de.comp.datenbanken.misc 12.67
+ de.comp.datenbanken.ms-access 97.67
+ de.comp.datenbanken.mysql 48.33
+
+Last but not least, a boundary type of I<sums> will show only those
+newsgroups - at all - that satisfy the boundaries with the total sum of
+all postings during the reporting period. With the above list of
+newsgroups and
+C<groupstats --month 2012-01:2012-03 --lower 25 --boundary sum --report sums>,
+you'll finally get this result:
+
+ ----- All months:
+ de.comp.datenbanken.misc 38
+ de.comp.datenbanken.ms-access 293
+ de.comp.datenbanken.mysql 145
+
+
+=item B<-g>, B<--group-by> I<month[-desc]|newsgroups[-desc]>
+
+By default, all results are grouped by month, sorted chronologically in
+ascending order, like this:
+
+ ----- 2012-01:
+ de.comp.datenbanken.ms-access 84
+ de.comp.datenbanken.mysql 88
+ ----- 2012-02:
+ de.comp.datenbanken.ms-access 126
+ de.comp.datenbanken.mysql 21
+
+The results can be grouped by newsgroups instead via
+B<--group-by> I<newsgroup>:
+
+ ----- de.comp.datenbanken.ms-access:
+ 2012-01 84
+ 2012-02 126
+ ----- de.comp.datenbanken.mysql:
+ 2012-01 88
+ 2012-02 21
+
+By appending I<-desc> to the group-by option parameter, you can reverse
+the sort order - e.g. B<--group-by> I<month-desc> will give:
+
+ ----- 2012-02:
+ de.comp.datenbanken.ms-access 126
+ de.comp.datenbanken.mysql 21
+ ----- 2012-01:
+ de.comp.datenbanken.ms-access 84
+ de.comp.datenbanken.mysql 88
+
+Average and sums reports (see above) will always be grouped by months;
+this option will therefore be ignored.
+
+=item B<-o>, B<--order-by> I<default[-desc]|postings[-desc]>
+
+Within each group (a single month or single newsgroup, see above), the
+report will be sorted by newsgroup names in ascending alphabetical order
+by default. You can change the sort order to descending or sort by number
+of postings instead.
+
+=item B<-f>, B<--format> I<pretty|list|dump>
+
+Select the output format, I<pretty> being the default:
+
+ ----- 2012-01:
+ de.comp.datenbanken.ms-access 84
+ de.comp.datenbanken.mysql 88
+ ----- 2012-02:
+ de.comp.datenbanken.ms-access 126
+ de.comp.datenbanken.mysql 21
+
+I<list> format looks like this:
+
+ 2012-01 de.comp.datenbanken.ms-access 84
+ 2012-01 de.comp.datenbanken.mysql 88
+ 2012-02 de.comp.datenbanken.ms-access 126
+ 2012-02 de.comp.datenbanken.mysql 21
+
+And I<dump> format looks like this:
+
+ # 2012-01:
+ de.comp.datenbanken.ms-access 84
+ de.comp.datenbanken.mysql 88
+ # 2012-02:
+ de.comp.datenbanken.ms-access 126
+ de.comp.datenbanken.mysql 21
+
+You can remove the comments by using B<--nocomments>, see below.
+
+=item B<-c>, B<--captions|--nocaptions>
+
+Add captions to output, like this:
+
+ ----- Report for 2012-01 to 2012-02 (number of postings for each month)
+ ----- Newsgroups: de.comp.datenbanken.*
+ ----- Threshold: 10 => x <= 20 (on average)
+ ----- Grouped by Newsgroups (ascending), sorted by number of postings descending
+
+False by default.
+
+=item B<--comments|--nocomments>
+
+Add comments (group headers) to I<dump> and I<pretty> output. True by default.
+
+Use I<--nocomments> to suppress anything except newsgroup names/months and
+numbers of postings. This is enforced when using B<--filetemplate>, see below.
+
+=item B<--filetemplate> I<filename template>
+
+Save output to file(s) instead of dumping it to STDOUT. B<groupstats> will
+create one file for each month (or each newsgroup, accordant to the
+setting of B<--group-by>, see above), with filenames composed by adding
+year and month (or newsgroup names) to the I<filename template>, for
+example with B<--filetemplate> I<stats>:
+
+ stats-2012-01
+ stats-2012-02
+ ... and so on
+
+B<--nocomments> is enforced, see above.
+
+=item B<--groupsdb> I<database table>
+
+Override I<DBTableGrps> from F<newsstats.conf>.
+
+=back
+
+=head1 INSTALLATION
+
+See L<doc/INSTALL>.
+
+=head1 EXAMPLES
+
+Show number of postings per group for lasth month in I<pretty> format:
+
+ groupstats
+
+Show that report for January of 2010 and de.alt.* plus de.test,
+including display of hierarchy levels:
+
+ groupstats --month 2010-01 --newsgroups de.alt.*:de.test --sums
+
+Only show newsgroups with 30 postings or less last month, ordered
+by number of postings, descending, in I<pretty> format:
+
+ groupstats --upper 30 --order-by postings-desc
+
+Show the total of all postings for the year of 2010 for all groups that
+had 30 postings or less in every single month in that year, ordered by
+number of postings in descending order:
+
+ groupstats -m 2010-01:2010-12 -u 30 -b level -r sums -o postings-desc
+
+The same for the average number of postings in the year of 2010:
+
+ groupstats -m 2010-01:2010-12 -u 30 -b level -r avg -o postings-desc
+
+List number of postings per group for eacht month of 2010 and redirect
+output to one file for each month, namend stats-2010-01 and so on, in
+machine-readable form (without formatting):
+
+ groupstats -m 2010-01:2010-12 -f dump --filetemplate stats
+
+
+=head1 FILES
+
+=over 4
+
+=item F<bin/groupstats.pl>
+
+The script itself.
+
+=item F<lib/NewsStats.pm>
+
+Library functions for the NewsStats package.
+
+=item F<etc/newsstats.conf>
+
+Runtime configuration file.
+
+=back
+
+=head1 BUGS
+
+Please report any bugs or feature requests to the author or use the
+bug tracker at L<http://bugs.th-h.de/>!
+
+=head1 SEE ALSO
+
+=over 2
+
+=item -
+
+L<doc/README>
+
+=item -
+
+l>doc/INSTALL>
+
+=item -
+
+gatherstats -h
+
+=back
+
+This script is part of the B<NewsStats> package.
+
+=head1 AUTHOR
+
+Thomas Hochstein <thh@inter.net>
+
+=head1 COPYRIGHT AND LICENSE
+
+Copyright (c) 2010-2012 Thomas Hochstein <thh@inter.net>
+
+This program is free software; you may redistribute it and/or modify it
+under the same terms as Perl itself.
+
+=cut
projects / usenet / newsstats.git / blobdiff