Sep 10 2017

mail Command in Shell Scripting

mail is an intelligent mail processing system which has a command syntax reminiscent of ed with lines replaced by messages.
mail is part of mailutils package in Debian-Based distros and is a very useful and powerful tool which can be used in scripts.
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Oct 24 2012

Count and Visualize Traffic Sources (by IP) using shell commands in Linux.

While suspecting to be victim of a DoS or DDoS Attack, could be useful to identify TOP Source of Connections.
This information can be retreived “On-The-Fly” by using some shell commands.
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