shellscript to backup an entire folder.

backup.sh

#!/bin/bash

# Default directories
DEFAULT_BACKUP_DIR="./backups"
DEFAULT_DIR_TO_COMPRESS="./public_html"

# Prompt for the directory to compress and backup
read -p "Enter the directory to compress [${DEFAULT_DIR_TO_COMPRESS}]: " DIR_TO_COMPRESS
DIR_TO_COMPRESS=${DIR_TO_COMPRESS:-$DEFAULT_DIR_TO_COMPRESS}

# Prompt for backup directory
read -p "Enter the backup directory [${DEFAULT_BACKUP_DIR}]: " BACKUP_DIR
BACKUP_DIR=${BACKUP_DIR:-$DEFAULT_BACKUP_DIR}

# Check if the directory to compress exists
if [ ! -d "$DIR_TO_COMPRESS" ]; then
  echo "Error: The directory '$DIR_TO_COMPRESS' does not exist."
  exit 1
fi

# Check if the backup directory exists or can be created
if [ ! -d "$BACKUP_DIR" ]; then
  echo "The backup directory '$BACKUP_DIR' does not exist. Creating it now..."
  mkdir -p "$BACKUP_DIR"
  if [ $? -ne 0 ]; then
    echo "Error: Could not create backup directory '$BACKUP_DIR'."
    exit 1
  fi
fi

# Get the base name of the directory to compress
BASE_NAME=$(basename "$DIR_TO_COMPRESS")

# Create the tar.gz file without including the directory structure
tar -czvf "${BACKUP_DIR}/${BASE_NAME}.tar.gz" -C "$DIR_TO_COMPRESS" .

# Check if the tar command was successful
if [ $? -eq 0 ]; then
  echo "Backup created successfully at ${BACKUP_DIR}/${BASE_NAME}.tar.gz"
else
  echo "Error: Failed to create the backup."
  exit 1
fi