Create extract.sh

extract.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+# Extract all shard_*.tar.gz in parallel with progress display.
+# Usage: bash extract_shards.sh [shard_dir] [output_dir] [num_workers]
+
+SHARD_DIR="${1:-data}"
+OUT_DIR="${2:-llava178k_merged}"
+WORKERS="${3:-8}"
+
+mkdir -p "$OUT_DIR"
+
+shards=("$SHARD_DIR"/shard_*.tar.gz)
+total=${#shards[@]}
+echo "Found $total shards, extracting with $WORKERS workers -> $OUT_DIR"
+
+# Use GNU parallel if available, otherwise xargs
+if command -v parallel &>/dev/null; then
+    printf '%s\n' "${shards[@]}" | parallel -j "$WORKERS" --bar \
+        tar xf {} --strip-components=1 -C "$OUT_DIR/"
+else
+    printf '%s\n' "${shards[@]}" | xargs -P "$WORKERS" -I{} \
+        bash -c 'echo "Extracting {}..." && tar xf "{}" --strip-components=1 -C '"$OUT_DIR/"
+fi
+
+echo "Done. Extracted $total shards to $OUT_DIR/"