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of the client request (both for POST and for GET), as well as the most important server environment details [6]. Additionally, you can use regular expressions. For example, to investigate an HTTP request to find
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, and to provide protection against VoIP spam by various means.
Additionally, other initiatives are SpITAssassin [6], an extension of SpamAssassin functionality, and the SPIT defense solution (SPIT AL). SPIT AL
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).
The following command finds all lines that begin with an opening tag and end with the corresponding closing tag:
grep "^<([^/ >]+)[^>]*>.*$" something.htm
The command displays lines 1, 2, 6, 7, and 10
