17.6. Exercises
See Appendix A for answers.
Create a program to open the sendmail alias database and print out all the entries.
Create two programs: one that reads the data from <>, splits it into words, and updates a DBM file noting the number of occurrences of each word; and another program to open the DBM file and display the results sorted by descending count. Run the first program on a few files and see if the second program picks up the proper counts.
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