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my @rrds = grep { /.*rrd$/ && -f "$logsdir/$_" } readdir DIR;

Why match zero or more characters in  /.*rrd$/ when  /rrd$/ would match the same thing with less work?    Perhaps you meant  /\.rrd$/ ?

$cmd = qq|$mv resize.rrd $logsdir/$rrd|; print "\tRenaming resized file, executing $cmd\n"; system($cmd) == 0 or die "Could not execute $cmd:$!\n";

Why not just use Perl's built-in rename function?

print "\tRenaming resized file, executing $cmd\n"; rename 'resize.rrd', "$logsdir/$rrd" or die "Could not rename +resize.rrd:$!\n";

In reply to Re: Resizing MRTG (RRDTool) logs en-masse by jwkrahn
in thread Resizing MRTG (RRDTool) logs en-masse by McDarren

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