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#!/usr/bin/perl
# readdir.monitor
# Return a list of directories that contains more than given files numbers
# For use with "mon" or stand alone.
#
#
# Usage : my-mailqueue.monitor [options] [dir1[:num1] dir2[:num2] ...]
#
# --number n : the maximum file number allowed
# --regex string : a regex expression to match
# --debug : print some debug information (do not use this with mon)
# but just in command line to understand everything :-)
# dir1 dir2 : list of directory to check
# Examples:
#
# Do nothing (nothing to check)
# $ ./my-readdir.monitor
#
# Checks if:
# /var/spool/mqueue contains more than 50 files (50 is a default value)
#
# $ ./my-readdir.monitor /var/spool/mqueue/
#
# Checks if:
# /var/spool/mqueue contains more than 14 files
#
# $ ./my-readdir.monitor /var/spool/mqueue/:14
#
# Check if :
# /var/spool/mqueue contains more than 14 files
# /var/spool/lp/requests contains more than 7 files
#
# $ ./my-readdir.monitor /var/spool/mqueue/:14 /var/spool/lp/requests:7
#
# Check if :
# /var contains more than 34 files
# /var/spool contains more than 34 files
# /bin contains more than 65 files
#
# $ ./my-readdir.monitor --number=34 /var /var/spool /bin:65
#
# Check if :
# /var/spool/mqueue contains more than 3 files which name
# begins with "df"
#
# $ ./my-readdir.monitor --number=3 --regex "^df" /var/spool/mqueue
#
# The regex can be every perl regex.
# this program exits with the $maxlogNumberFound in log based 2 fashion.
# file number found = 1 * number Allowed, log = 1
# file number found = 2 * number Allowed, log = 2
# file number found = 4 * number Allowed, log = 3
# .
# .
# .
# 2^n * $numberAllowed, log = n+1
#
# Reverse:
# if the return status is N, that means that the directories
# contains more (or equal) than 2^(N-1) * allowed files number
# and less than 2^N * allowed files number
# The worse situation is return (in case of several directories)
#
# Gilles LAMIRAL, lamiral@mail.dotcom.fr
#
#
# Copyright (C) 1998, Gilles LAMIRAL
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA #
use Getopt::Long;
use DirHandle;
GetOptions(
"number:i" => \$globalNumberAllowed,
"debug" => \$debug,
"regex:s" => \$regex
);
$globalNumberAllowed = ($globalNumberAllowed) ? $globalNumberAllowed : "50";
@failures = ();
$maxlogNumberFound = 0;
foreach $dir (@ARGV) {
my ($dirHandle, @filesList, @filesListFiltered, $numberFound);
($dir, $numberAllowed) = split (/:/, $dir, 2);
$numberAllowed = ($numberAllowed) ? $numberAllowed : $globalNumberAllowed;
($debug) and print "directory checked : $dir\n";
($debug) and print " number of file allowed : $numberAllowed\n";
$dirHandle = new DirHandle "$dir";
if (defined $dirHandle) {
# reads the directory and filters "." and ".." files
@filesList = grep !/^\.\.?$/, $dirHandle->read();
$dirHandle->close();
if ($regex) {
foreach $file (@filesList) {
push(@filesListFiltered, $file) if ($file =~ /$regex/);
}
@filesList = @filesListFiltered;
}
$numberFound = scalar(@filesList);
#($debug) and print "@filesList\n";
($debug) and print " number of files : $numberFound\n";
if ($numberFound >= $numberAllowed) {
push (@failures, sprintf ("%s:%s", $dir, $numberFound));
$logNumberFound = 1+(log($numberFound / $numberAllowed)/log(2));
($debug) and print " 1+(log($numberFound/$numberAllowed)/log(2)) = ", $logNumberFound,"\n";
if ($logNumberFound > $maxlogNumberFound) {
$maxlogNumberFound = $logNumberFound;
}
}
}else{
warn "Could not open $dir : $!\, warn at";
push (@failures, sprintf ("%s:%s", $dir, "COULD_NOT_OPEN"));
};
}
if (@failures == 0) {
exit 0;
}
($debug) and print "\nSummary:";
print join (" ", sort @failures), "\n";
if ($maxlogNumberFound >= 1) {
($debug) and print "maxlogNumberFound (exit status) =$maxlogNumberFound\n";
$exitStatus = int($maxlogNumberFound);
}else{
$exitStatus = 1;
}
exit($exitStatus);
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