74 lines
1.6 KiB
Perl
Executable File
74 lines
1.6 KiB
Perl
Executable File
#!@@@perl@@@
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#
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# Report wasted space.
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#
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# This basically prints a list of files and directories below a
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# start point, where each entry is tagged with a "waste factor".
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# The waste factor is a weighted sum of size, mtime and atime
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# of the file.
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#
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sub wastefactor {
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my ($size, $mtime, $atime) = @_;
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return $size * $sf * ($mtime * $mf + $atime * $af);
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}
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sub waste {
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my ($dir) = @_;
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my $i;
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my @files;
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my ($mtime, $atime, $size);
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my ($tmtime, $tatime, $tsize) = (0, 0, 0);
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if (!opendir(DIR, $dir)) {
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printf "$0: cannot open directory $dir: $!\n";
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return;
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}
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@files = readdir(DIR);
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closedir(DIR);
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foreach $i (@files) {
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if ($i eq "." || $i eq "..") { next }
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$filename = $dir . "/" . $i;
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($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
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$atime,$mtime,$ctime,$blksize,$blocks) =
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lstat($filename);
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if (-d _) {
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($size, $mtime, $atime) = waste($filename);
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} else {
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printf "%10.0f %d %d %d %s\n",
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wastefactor(
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$size, ($now - $mtime), ($now - $atime)),
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$size, ($now - $mtime), ($now - $atime),
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$filename;
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}
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$tsize += $size;
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if ($mtime > $tmtime) {$tmtime = $mtime;}
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if ($atime > $tatime) {$tatime = $atime;}
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}
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printf "%10.0f %d %d %d %s\n",
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wastefactor(
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$tsize, ($now - $tmtime), ($now - $tatime)),
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$tsize, ($now - $tmtime), ($now - $tatime),
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$dir;
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return ($tsize, $tmtime, $tatime);
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}
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### --- main --- ###
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$sf = 1.0/1000;
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$mf = $af = 1.0/(3600*24*365.25);
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if ($#ARGV != 0) {
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print "Usage: $0 directoryname\n";
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exit(1);
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}
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$now = time();
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waste($ARGV[0]);
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exit(0);
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