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structured3d/merge.sh

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+#!/bin/bash
+
+# Merge script for structured3d dataset
+# This script reassembles chunks back into the original structured3d.tar.gz file
+
+DATASET_NAME="structured3d"
+OUTPUT_FILE="structured3d.tar.gz"
+
+echo "Merging $DATASET_NAME chunks"
+echo "============================="
+
+if [ ! -d "chunks" ]; then
+    echo "Error: chunks directory not found"
+    echo "Run ./split.sh first or ./download.py to get chunks"
+    exit 1
+fi
+
+# Check if chunks exist
+if [ ! -f "chunks/${DATASET_NAME}_part_000" ]; then
+    echo "Error: No chunks found in chunks directory"
+    echo "Expected files like ${DATASET_NAME}_part_000, ${DATASET_NAME}_part_001, etc."
+    exit 1
+fi
+
+echo "Found chunks:"
+ls -lh chunks/${DATASET_NAME}_part_* | awk '{print "  " $9 ": " $5}'
+
+echo
+echo "Reassembling $OUTPUT_FILE..."
+
+# Merge chunks in correct order
+cat chunks/${DATASET_NAME}_part_* > "$OUTPUT_FILE"
+
+if [ $? -eq 0 ]; then
+    echo "✓ Successfully reassembled $OUTPUT_FILE"
+    echo "File size: $(ls -lh "$OUTPUT_FILE" | awk '{print $5}')"
+    
+    echo
+    echo "Next steps:"
+    echo "1. Run ./extract.sh to extract the contents"
+    echo "2. Verify the file integrity if needed"
+else
+    echo "✗ Failed to reassemble $OUTPUT_FILE"
+    exit 1
+fi