code:

  1 #!/bin/sh
  2
  3 #Some variables
  4 BKD="/home/naigovan/"        #BKD - A directory to backup
  5 SRCD="/var/backups/tmp"      #SRCD - SouRCe Directory
  6 TGTD="/var/backups/"         #TGTD - TarGeT Directory
  7 MAXAGE=15                    #Maximum age of files to backup
  8 OF=backup-$(date +%Y%m%d).tgz  #OF - Output File
  9
 10 # Main body
 11
 12 [ -d "$SRCD" -a "x`find $SRCD | wc -l`" != "x0" ] && find $SRCD | xargs rm -rf
 13    [ ! -d "$SRCD" ] && mkdir -p "$SRCD"
 14 find $BKD -atime $MAXAGE -type f | while read FILE
 15 do
 16 FILE_DIR="`echo $FILE | sed -e 's#^$INITIAL_DIR##' -e 's/\(.*\)\/[^\/].*$/\1/'`"
 17   [ ! -d "$SRCD/$FILE_DIR" ] && mkdir -p $SRCD/$FILE_DIR
 18   cp $FILE $SRCD/$FILE_DIR
 19 done
 20 tar -czf $TGTD$OF $SRCD
 21 rm -rf $SRCD