EEEROCK

#!/bin/bash
mkdir JUSTFORBACKUP
echo "Path to Directory, EXAMPLE:/home/admin00/Desktop/aaa/"
#read pathToDirectory
echo "Rasshirenie, EXAMPLE:.txt"
#read rasshirenie
pathToDirectory="/home/admin00/Desktop/aaa/"
rasshirenie=".txt"
maxCopiesCount=5
currentDate=$(date +%Y-%m-%d-%S)
#firstsize=$(du -bS *.txt $pathToDirectory)


#archivate
tar -cf JUSTFORBACKUP/ArchiveForBackup$currentDate.tar $pathToDirectory*$rasshirenie


#check if archive is bad
tar -xf JUSTFORBACKUP/ArchiveForBackup$currentDate.tar >> /dev/null; echo $?


#delete old copies
allCount=$((ls -f JUSTFORBACKUP)|(wc -l))
copiesCount=$(($allCount-2))  #get Copies count
differnce=$(($copiesCount-$maxCopiesCount))
#if [[$differnce=1]]; then rm -r "JUSTFORBACKUP/1" fi


#time when you do this
#cat <(crontab -l) <(echo "0 0 * * 5/home/admin00/Desktop/backup.sh") | crontab -
#(crontab -l 2>&/dev/null; echo "0 0 * * 5/home/admin00/Desktop/backup.sh")|crontab -
#crontab -l|{cat; echo "0 0 * * 5/home/admin00/Desktop/backup.sh";}|crontab -
#does backup every friday
# in terminal: crontab -e, then 0 0 * * 5/home/admin00/Desktop/backup.sh