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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 June 2017

Install and Configure Etckeeper

June 23, 2017 – 8:05 am
shell_0006

Etckeeper is a handy tool that uses git to keep track of changes to anything in /etc (or any other folder you choose). It’s very simple to use and can help you quickly identify and undo stupid …

Using IPTables to Allow Access to Private Networks

June 22, 2017 – 9:46 am
network_cable_01

Below is a quick example of how to use iptables to allow port access for all types of private networks. In this case we’re allowing access to ports 10000 and 20000, commonly used by webmin and usermin.

Parallel Rsync

June 10, 2017 – 3:55 pm
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This is an update of the script I originally wrote five years ago and used to migrate many terabytes of production data between two NAS systems. What’s new: more efficient subfolder crawling, more effective way …