Examples of problems with integers

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Examples of floating point problems

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Some business graphs for 2022

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New zine: The Pocket Guide to Debugging

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A debugging manifesto

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Tips for analyzing logs

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A couple of Rust error messages

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Making a DNS query in Ruby from scratch

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Why do domain names sometimes end with a dot?

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How to send raw network packets in Python with tun/tap

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Some ways to get better at debugging

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A toy remote login server

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What happens when you press a key in your terminal?

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Monitoring tiny web services

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Notes on running containers with bubblewrap

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sqlite-utils: a nice way to import data into SQLite for analysis

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Pages that didn't make it into "How DNS Works"

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New zine: How DNS Works!

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A list of new(ish) command line tools

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Implementing a toy version of TLS 1.3

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