Question: Write a shell script that produces a file of sequential numbers by reading the last number in the file, adding 1 to it, and then

Write a shell script that produces a file of sequential numbers by reading the last number in the file, adding 1 to it, and then appending it to the file. Run one instance of the script in the background and one in the foreground, each accessing the same file. How long does it take before a race condition manifests itself? What is the critical region? Modify the script to prevent the race.

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A possible shell script might be if f numbers then echo 0 numbers fi count 0 while test count 20... View full answer

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