Sample Exercises
Command Line: Edit In Place
Write a command-line program that modifies the contents of the file(s) given on the command line, replacing the word "Java" with "Perl" wherever it occurs, case-insentively. In other words, delete any It should create a file called foo.txt.old for any file foo.txt given, containing the original contents; the file foo.txt should contain the modified version. (Yes, you can do this only with Perl command-line options!)
Solution for Edit In Place
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