#!/bin/bash
DEST=/media/nss/ARH/post/
FIRST=`ls $DEST | grep “tar.gz” | awk ‘ORS=” “{print}’ | awk ‘{print($1)}’`
let COUNT=`ls $DEST | grep -c “tar.gz”`
let MAX=7
if [ $COUNT -gt $MAX ]; then
echo \n `date` >> /var/log/cleaning
while [ $COUNT -gt $MAX ]; do
rm $DEST$FIRST
FIRST=`ls $DEST | grep “tar.gz” | awk ‘ORS=” “{print}’ | awk ‘{print($1)}’`
let COUNT=`ls $DEST | grep -c “tar.gz”`
echo \n “Delete $FIRST” >> /var/log/cleaning
done
fi

Thx to Mor.