Question: sed (Stream EDitor) is a unix utility for processing text files. Write a sed command to obfuscate email addresses in its input file, e.g., replace

sed (Stream EDitor) is a unix utility for processing text files. Write a sed command to obfuscate email addresses in its input file, e.g., replace foo@bar.com with foo .at. bar .dot. com (but this should work for any email address). Hint: more than one email might heppen on one line such as in a paragraph.

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