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  Get started with strace by examining a pair of "Hello World" programs. Next month, in the second part of this two-part series, I'll take a deeper look at strace output.

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• Practical strace

  After "Hello World," you really need to look at system calls in more detail. In this second of two articles, we'll look at debugging in the real world.

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• Perl: Ptrace

  Linux lets users watch the kernel at work with a little help from Ptrace, a tool that both debuggers and malicious process kidnappers use. A CPAN module introduces this technology to Perl and, if this is not enough, C extensions add functionality.

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• MITRE ATT&CK Workshop

  The MITRE ATT&CK website keeps information on attackers and intrusion techniques. We'll show you how to use that information to look for evidence of an attack.

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• Traffic shaping with Trickle

  Is your Internet connection groaning under the load of too many simultaneous downloads? If so, try Trickle, a simple application that gives you more granular control over network traffic.

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