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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 August 2021

IP Geolocation from Shell

August 25, 2021 – 11:23 am
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A handy utility by Rafael Rinaldi called whereami allows you to geolocate an IP address directly from the command line. Here are some quick notes on installing and using this tool.

Approximate String Matching

August 18, 2021 – 11:15 am
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On occasion I find myself searching for something in log files or in my Bash history, but I can’t quite remember what it is that I am looking for. Come to think of it, this …

Understanding Memory Utilization in Linux

August 11, 2021 – 11:10 am
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This is a depressing – and all-too-common – scenario: a user runs the free command and opens a support case because he sees zero “free” memory on the server.