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Please provide a single uniq command that compares the first 3 characters of lines in file /etc/hosts and then displays the number of occurrences of

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Please provide a single "uniq" command that compares the first 3 characters of lines in file /etc/hosts and then displays the number of occurrences of lines in the file: Please provide a single "grep" command that displays all the lines in all the files, under your home directory, that contain a word "Metronnlitan

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