Backup brew settings

brew-backup-and-restore.sh

#!/bin/bash

# バックアップファイルの保存先
BACKUP_DIR=~/brew-backup
mkdir -p "$BACKUP_DIR"

echo "📦 Saving installed formulae..."
brew list > "$BACKUP_DIR/formula-list.txt"

echo "🧃 Saving installed casks..."
brew list --cask > "$BACKUP_DIR/cask-list.txt"

echo "🌐 Saving tapped repositories..."
brew tap > "$BACKUP_DIR/tap-list.txt"

echo "✅ Backup complete. Files saved in $BACKUP_DIR"

# 復元用スクリプト作成
cat <<'EOF' > "$BACKUP_DIR/brew-restore.sh"
#!/bin/bash

echo "🔁 Restoring Homebrew environment..."

echo "📥 Re-tapping repositories..."
xargs brew tap < ~/brew-backup/tap-list.txt

echo "📦 Installing formulae..."
xargs brew install < ~/brew-backup/formula-list.txt

echo "🧃 Installing casks..."
xargs brew install --cask < ~/brew-backup/cask-list.txt

echo "✅ Restoration complete."
EOF

chmod +x "$BACKUP_DIR/brew-restore.sh"

echo "📝 To restore your Homebrew setup later, run:"
echo "bash $BACKUP_DIR/brew-restore.sh"