Recap - Data Pipeline

The file sales.txt contains product sales records in the format category:item:price. Build a complete data pipeline to find how many unique products were sold in the electronics category.

Run a single command that:

• Uses cat to read sales.txt
• Pipes to grep to filter only lines containing electronics
• Pipes to sort to arrange the entries
• Pipes to uniq to remove duplicates
• Pipes to wc -l to count the unique electronics products

Hint: This pipeline combines everything you've learned: filtering with grep, preparing data with sort, removing duplicates with uniq, and counting with wc -l. Chain all five commands using the | symbol.