Initial commit: combine nas_tool, nas_webdav, sync-utils

free_system_data.sh

@@ -0,0 +1,111 @@
+#!/bin/bash
+
+# Free System Data (351GB)
+# Most of this is purgeable space held by snapshots
+
+set -e
+
+echo "=== Free System Data (351GB) ==="
+echo ""
+echo "System Data is 351GB, but visible components only add up to ~20GB."
+echo "This means ~330GB is PURGEABLE SPACE held by snapshots."
+echo ""
+
+FREE_SPACE_BEFORE=$(df / | tail -1 | awk '{print $4}')
+FREE_SPACE_GB_BEFORE=$(echo "scale=2; $FREE_SPACE_BEFORE / 1024 / 1024" | bc)
+echo "Current free space: ${FREE_SPACE_GB_BEFORE}GB"
+echo ""
+
+echo "🔧 Step 1: Aggressively thin all snapshots..."
+sudo tmutil thinlocalsnapshots / 1000000000 1 2>&1
+echo "   ✓ Completed"
+echo ""
+
+echo "🔧 Step 2: Purge system memory and caches..."
+if command -v purge &> /dev/null; then
+    sudo purge
+    echo "   ✓ Purged"
+else
+    echo "   ⚠️  Purge command not available"
+fi
+echo ""
+
+echo "🔧 Step 3: Remove Time Machine destination (CRITICAL)"
+echo ""
+echo "   ⚠️  IMPORTANT: You MUST remove Time Machine destination to"
+echo "      prevent new snapshots from being created!"
+echo ""
+echo "   Do this now:"
+echo "   1. System Settings → General → Time Machine"
+echo "   2. Click '-' to remove backup disk"
+echo "   3. Confirm removal"
+echo ""
+read -p "   Have you removed Time Machine destination? (y/n) " -n 1 -r
+echo ""
+if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+    echo "   ⚠️  Please remove it first, then run this script again."
+    exit 1
+fi
+
+echo ""
+echo "🔧 Step 4: Wait for system to release purgeable space..."
+echo "   This may take a few minutes..."
+sleep 10
+
+echo ""
+echo "🔧 Step 5: Try to delete stuck snapshot..."
+SNAPSHOT=$(tmutil listlocalsnapshots / 2>/dev/null | grep -v "Snapshots for disk" | grep -v "^$" | head -1)
+if [ -n "$SNAPSHOT" ]; then
+    SNAP_DATE=$(echo "$SNAPSHOT" | sed 's/.*\.\([0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-[0-9]\{6\}\)\.backup/\1/')
+    echo "   Attempting to delete: $SNAPSHOT"
+    if sudo tmutil deletelocalsnapshots "$SNAP_DATE" 2>/dev/null; then
+        echo "   ✅ Deleted!"
+    else
+        echo "   ⚠️  Still stuck (ghost entry - will clear on restart)"
+    fi
+else
+    echo "   ✅ No snapshots found"
+fi
+
+echo ""
+echo "⏳ Waiting for space to be released..."
+sleep 10
+
+# Check results
+FREE_SPACE_AFTER=$(df / | tail -1 | awk '{print $4}')
+FREE_SPACE_GB_AFTER=$(echo "scale=2; $FREE_SPACE_AFTER / 1024 / 1024" | bc)
+FREED_GB=$(echo "scale=2; $FREE_SPACE_GB_AFTER - $FREE_SPACE_GB_BEFORE" | bc)
+
+echo ""
+echo "=== Results ==="
+echo "   Before: ${FREE_SPACE_GB_BEFORE}GB free"
+echo "   After:  ${FREE_SPACE_GB_AFTER}GB free"
+if (( $(echo "$FREED_GB > 100" | bc -l) )); then
+    echo "   ✅ Successfully freed: ${FREED_GB}GB!"
+elif (( $(echo "$FREED_GB > 0" | bc -l) )); then
+    echo "   ✅ Freed: ${FREED_GB}GB"
+    echo "   (More space may be released over time)"
+else
+    echo "   ⚠️  No space freed yet"
+fi
+echo ""
+
+if (( $(echo "$FREE_SPACE_GB_AFTER < 50" | bc -l) )); then
+    echo "⚠️  Still low on space. Additional steps:"
+    echo ""
+    echo "1. **Restart your Mac** - This is the most effective way"
+    echo "   to release purgeable space from snapshots."
+    echo ""
+    echo "2. Use macOS Storage Management:"
+    echo "   Apple Menu → About This Mac → Storage → Manage"
+    echo "   Click 'Optimize' to release purgeable space"
+    echo ""
+    echo "3. Wait 15-30 minutes - macOS may need time to"
+    echo "   release the purgeable space"
+    echo ""
+    echo "4. The 351GB in System Data is mostly purgeable space"
+    echo "   that will be released when snapshots are cleared."
+    echo ""
+fi
+
+echo ""