#! /usr/bin/bash

if [[ $UID != 0 ]]; then
  echo "Please run this using sudo"
  exit
fi

prefix=backup_WebPage
targetFolder=/var/
target=www/

fileName=$prefix-$(date +'%Y%m%d').tar.gz

dir=$(pwd)

echo "====== backup Web page data from $targetFolder/$target"

echo "====== check number of backup"
nBackup=$(ls -1 $prefix-* | wc -l)
echo "number of backup : ${nBackup}"
if [[ $nBackup -gt 3 ]]; then
   oldFile=$(ls -t $prefix-* | tail -1)
   echo "removing the old backup $oldFile"
   rm -f $oldFile
fi

echo "====== cd to $targetFolder"

cd $targetFolder
tar -cf - $target -P | pv -s $(du -sb $target | awk '{print $1}') | gzip > $fileName

ls -l $fileName
mv $fileName $dir/.

echo "backup saved to ${fileName}"

echo "===== ssh to newton.physics.fsu.edu"
cd $dir
scp -rp $fileName ryan@128.186.111.52:/backupHome/.