Removing Stale RRD Files

I’ve found that when dealing with rrdfiles, they can show the wrong lastmodified time.  This means if I go with the usual: delete all files that haven’t been modified within say 2 days, I could be deleting some GOOD rrd files…

Here’s my solution.  Use rrdtool lastupdated to spit out epoch time of last updated and anything that’s older than 2 days we’ll delete:

for myfile in *.rrd
   #rrdtool lastupdate $myfile | tail -1 | awk -F: '{if ($1 < systime()-172800) print strftime("%c",$1)}';
   RETURN=`rrdtool lastupdate $myfile | tail -1 | awk -F: '{if ($1 < systime()-172800) print 0}'`
   if [ "$RETURN" == 0 ]; then
      echo "Deleting $myfile"
      # uncomment to really remove file
      #/bin/rm -f $myfile
      echo "Skipping File $myfile"



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