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ZSH: Simple Network Port Checker

Saturday, April 19th, 2014

Ok, I had an itch – I prefer to use what I deem ‘simple’ tools to get things done – in this case I needed a simple solution for checking for open ports (i.e. port traffic is not blocked by a firewall.)  After a quick scan of the ZSH man pages I found: zshtcpsys    Zsh Continue reading →

More Awk with CSV/DSV files

Sunday, January 13th, 2013

CSV/DSV Basics CSV = Comma Separated Values DSV = Delimited Values, i.e. comma (,), pipe (|), tab ‘\t’, etc. Why Use Awk? The approaches used by most scripting languages are quite similar – understand one and picking up another is usually pretty easy; Awk, while perhaps ‘syntax-querky’, is relatively easy to work with. While there Continue reading →

WordPress – BotNet Login Hacking Attacks

Friday, May 11th, 2012

So, why should you use login restrictions or a Login monitor (plugin or other solution) for your WordPress site? Just one reason – from one day of web logs for one domain – there were no successful logins during this ‘attack’. 5/9/2012 Fail | Start/Stop | IP address | GeoIP Info —–|——————-|—————–|—————————————-   1.    1 Continue reading →

Reading DS18B20 Temperature sensors with DigiTemp

Wednesday, April 25th, 2012

Over the past several months I have collected quite a number of temperature readings from a custom sensor network.  I started with ~30 sensors and maxed out at ~42 sensors (due to limitations/quirks of 1-Wire protocol/networks.)  For background on this project visit the related posts. I am using Digitemp because it simply works – but Continue reading →

Fedora Linux – using Sound via Cron

Tuesday, April 17th, 2012

As a ‘logged in user’, playing a sound file (i.e. *.WAV or other audio file format) is really quite simple on Linux systems – you need: hardware that can generate sound output, one or more speakers connected to output ports, and software to read/render the auditory data. I have been using Fedora for several years Continue reading →

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