ShellScripting/backup.sh at main · sanjaraiy/ShellScripting · GitHub

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#!/bin/bash


<<readme
 This is a script for backup with 5 days rotation


 Usage:
 ./backup.sh <path to your source> <path to backup folder>
readme


function display_usage {
      echo "./backup.sh <path to your source> <path to backup folder>"

}

if [$# -eq 0]; then
       display_usage

fi

source_dir=$1
timestamp=$('+%Y-%m-%d-%H-%M-%S')
backup_dir=$2

function create_backup {

	zip -r "${backup_dir}/backup_${timestamp}.zip" "${source_dir}" > /dev/null

	if [ $? -eq 0]; then
	echo "backup generated successfully for ${timestamp}"
        fi
}

function perform_rotation {
   backups=($(ls -t "${backup_dir}/backup_"*.zip 2>/dev/null))
  # echo "${backups[@]}"

   if ["${#backups[@]}" -gt 5]; then
	   echo "Performing rotation for 5 days"

	   backups_to_remove=("${backups[@]:5}")

	  # echo "${backups_to_remove[@]}"

	   for backup in "${backups_to_remove[@]}";
           do
		   rm -f ${backup}
	   done

   fi
}

create_backup
perform_rotation