Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

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.(Hint: run a command ending in a & to run in the background) -- Assume integer numbers.

How long does it take before a race condition manifests itself? What is the critical region? Modify the script to prevent the race.

(Hint: use

ln file file.lock

to lock the data file.)

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Data Analysis Using SQL And Excel

Authors: Gordon S Linoff

2nd Edition

111902143X, 9781119021438

More Books

Students also viewed these Databases questions

Question

Do teachers across cultures differ in immediacy? Explain.

Answered: 1 week ago