Posts Categorized: linux

DriveReady SeekComplete Error

On some CentOS VMs running on VMWare I was seeing the following errors in the syslog:

Looks like while installing munin-node a plugin was configured to check the SMART hard disk temperature and this check was failing so to stop the error messages


Fabric: Getting Started Tutorial

Hopefully this may help someone else out there who is looking for a good excuse to use Fabric in anger. I install Fabric on my local Ubuntu desktop using:

With Fabric installed I created a new directory for playing around and inside that folder created a file named as follows:

With the… Read more »

Top of the Tops 2013

A revised list of my favourite ‘tops’ htop htop can provide a little more info than the traditional ‘top’ – I like how it shows the amount of memory usage minus the cache. iftop To check network connectivity use iftop: iptraf Like iftop but with more options and even the ability to show traffic by… Read more »

Some Linux LPI 102 Exam Questions

I just passed my Linux LPI 102 exam today and thought I would try to remember a few of the 60 questions in case I ever have to take a refresher – here is about half of them. I can’t remember the wording exactly for these questions so take with a pinch of salt: 1…. Read more »

Command Line Wireless Trouble-shooting

I wanted to compare the command line output of a working Wifi connection versus a connection at a location that was giving us trouble. To do so I used Ubuntu (12.10) on a laptop and used the following commands – in a script if necessary. First a configuration file to use with the wpa-supplicant –… Read more »

Fail2Ban Custom Action

I decided to experiment with creating a central database to hold the IP addresses banned by various servers / honeypots running Fail2Ban – so that the information could be used as a source for IPtables or TCPWrappers to protect other servers. I created the file /etc/fail2ban/action.d/qshield.conf and in it placed the following:

Then editied… Read more »

Dynamic DNS to Raspberry Pi

I now have my Raspberry Pi hanging off my router – just two cables – a USB cable to the USB port on the router for power and one ethernet cable. 1. Static IP Address I edited the file: /etc/network/interfaces replacing:


So that my Pi would be available at a static address. I… Read more »

FFmpeg Convert FLV to AVI

I was having difficulty converting an FLV file saved from iPlayer. The command to successfully convert the file was:

Samsung TV Channel Editing


I wanted to configure the channel numbers on my Samsung LE40C580 but using the remote control on the TV was a bit frustrating. I found that within the TV menu I could export/import the channel list to a USB drive. Changing the file extension to .zip allows extracting the file to view the contents: I discovered… Read more »

Bash Shell Script to Automate FTP File Transfer

A little script to send a backup file to a remote FTP server:

Then run it every day from Cron.