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Q. CS 652 - Programming problem?
Without using the system() function to call any bash commands, write a python program that will implement a simple version of the diff command. This command will look at the contents of two directories and report on the di?erences between them. This includes those ?les that are only in one directory or the other, as well as ?les that have the same name, but have di?erent characteristics as de?ned below. The format of this command will be:
diff [-R] [-c value] directory1 directory2
The options are as follows:
The report generated by the program should include three lists of ?les for every pair of directories (or subdirectories in the recursive case). The ?rst list contains those ?les only in directory1. The second list contains those ?les only in directory2. The third list contains those ?les that have the same name in each directory, but are considered di?erent based on the -c option value. These lists should be sorted alphabetically. If a bad option is given to the command an error message should be displayed (including a bad value to the -c option). If anything other than two directories are speci?ed on the command line, an error message should be displayed.
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