gistfile1.txt

# Get the size of the source directory in GB
SRC_SIZE=$(du -sk "$SRC" | awk '{print $1}')
SRC_SIZE_GB=$(echo "scale=2; $SRC_SIZE / 1024 / 1024" | bc)

# Get the available space in the destination in GB
DEST_AVAILABLE=$(df -k "$DEST" | tail -1 | awk '{print $4}')
DEST_AVAILABLE_GB=$(echo "scale=2; $DEST_AVAILABLE / 1024 / 1024" | bc)

# Calculate the required space (source size + 25%) in GB
REQUIRED_SPACE_GB=$(echo "scale=2; $SRC_SIZE_GB + ($SRC_SIZE_GB * 0.25)" | bc)

# Check if the destination has enough space in GB
if (( $(echo "$DEST_AVAILABLE_GB < $REQUIRED_SPACE_GB" | bc -l) )); then
    echo "Error: Not enough space in $DEST. Required: $REQUIRED_SPACE_GB GB, Available: $DEST_AVAILABLE_GB GB"
    exit 1
fi

# Proceed with the rest of the script if space is sufficient