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4.7Hands-On Exercise

Use a pipe chain to find the 5 most common words in a text file
Redirect both stdout and stderr of a test run to separate files
Use tail -f to monitor a log file while running tests in another terminal
Build a pipe that analyzes an access log: count requests by status code, showing the top 5
Use tee to save curl output to a file while also piping it through jq
Write a one-liner that finds all .spec.ts files containing test.only and lists them with line numbers