Backup Ubuntu Directory

backupdir.sh

backup_dir_function() {
  # Log the start of the command
  logger -p syslog.info "Starting backup process."

  # must pass in a directory
  directory="$1"
  # Convert to absolute path if a relative path is given
  if [[ ! "$directory" = /* ]]; then
    directory="$(pwd)/$directory"
  fi

  if [ -d "$directory" ]; then
    # get the folder name
    root_folder_name=$(basename "$directory")
    # get the parent directory
    parent_directory=$(dirname "$directory")
    # get the current date and time
    timestamp=$(date +"%Y%m%d_%H%M%S")
    # Define backup directory
    backup_directory="/var/backups"
    backup_file_name="${backup_directory}/${root_folder_name}_${timestamp}.tar.gz"

    # Check and create backup directory
    if [ ! -d "$backup_directory" ]; then
      mkdir -p "$backup_directory"
      if [ $? -ne 0 ]; then
        echo "Error: Failed to create backup directory."
        return 1
      fi
    fi

    # tar command to create the backup with preserving permissions without logging every file
    if sudo tar -zcpvf "$backup_file_name" -C "$parent_directory" "$root_folder_name" > /dev/null; then
      echo "Backup of $directory created at [$backup_directory] with name ${root_folder_name}_${timestamp}.tar.gz"

      # Log the successful completion of the command
      logger -p syslog.info "Backup process completed successfully."
    else
      echo "Error: Backup of $directory failed."
      logger -p syslog.err "Error: Backup of $directory failed."
      return 1
    fi
  else
    echo "Error: $directory is not a directory."
    # Log the error
    logger "Error: $directory is not a directory."
    return 1
  fi
}