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March 2, 2022 – 2:00 pm

Books have been written on the subject of awk and sed. Here’s a small sample of commands I put together over the years that are useful for everyday system administration tasks. Most of these tasks …

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Article Archive for March 2019

Multi-Dimensional Arrays in Bash

March 30, 2019 – 4:06 pm
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Bash does not support multi-dimensional arrays, but there is a way to imitate this functionality, if you absolutely have to.

Asciinema Notes

March 27, 2019 – 4:04 pm
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Asciinema is an awesome tool for recording your console sessions. It’s great for documenting processes and, in general, showing people how shit works: one look is worth a thousand words, as they say. Unfortunately, I …

Late Night Rant: Facebook

March 25, 2019 – 4:15 pm
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According to media reports, since 2012, millions of Facebook and Instagram logins and plaintext passwords have been sitting on some internal Facebook system, accessible by  thousands of the company’s employees.

Measure DNS Server Performance

March 25, 2019 – 4:04 pm
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This is not an entirely proper way to benchmark a DNS server, but, in a pinch, it should give you some idea of its responsiveness and stability.