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Channel: S.G. Vulcan
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Debian squeeze laptop harddisk restarts every few seconds.

I installed a miniserver using a 2.5 WD Sata HDD. I noticed that the disk will park shutdown and restart every 10 seconds or so. This was far worse than what happened here:...

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Extending the range of a WiFi stick adapter

I relocated some of my networking gear and by doing that one of my pc’s found itself in a blind spot of the wireless network. I decided to try and see if I can extend the range of the usb wireless...

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Moved to 500px

I gave up posting photographs here. Instead now I post most of my shots on 500px.com/silviuvulcan as I enjoy the community response. I also post some sets on Facebook and G+

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Using Xenu with authentication

I needed to scan a Joomla site that only shows most of its content when logged in in the frontend. Xenu FAQ suggests using Cookies. That didn’t work for me. So I used Fiddler web debugger and it’s...

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Speed-up X over ssh

Even though I run a pretty fast network and vpn at home I still have the occasional hiccup running demanding applications (i.e. digikam) at home. A few simple options can speed up X considerably....

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Choosing a video player for the Nexus 10

So, I made the leap and I bought a tablet, a Google Nexus 10 to be more precise. Up until now I used vPlayer and the default video player on my Android Phone (galaxy S2) but on the tablet the default...

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What focal lenght I need a prime lens for?

If you are contemplating buying a prime lense and use digikam you might find this little script I wrote useful: https://github.com/silviuvulcan/digikam-stats It can show you the number of images shot...

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cPanel IP migration

I had to switch the main IP address of a cPanel server. Basically you follow the IP Migration Wizard steps, but when I was done the A records for the main hostname were wrong (still having the old IP)....

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fail2ban and apache digest authentication

Although I don’t consider fail2ban something to rely on for security is just another piece of the puzzle when securing a server. When configuring fail2ban for a debian server I noticed that the...

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Test degrading write speed on a system with lots of small files.

I created a script that generates random files in a random folder structure. I let it run for 1.000.000 files and than 1.000.000 more. Here are the results: 12345678910111213141516171819#!/bin/bash...

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Mount a remote fs after connecting to a vpn. (NetwrokManager)

When away I use a vpn connection to connect to my home server. The first thing after connecting is usually mounting some resources using sshfs (yes I know, not very efficient but for personal use is...

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Apache2 mpm-itk maxclients settings

I run the mpm-itk apache2 module on my server since it’s shared between a few sites. A few rogue crawlers brought it down a few days ago and while I was checking the logs I noticed a lot more apache...

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Dia crashes with latest updates in slacware-current

Having just updated to the latest set of slackware current packages I found that the trusty old Dia would segfault: 12** (dia:26707): CRITICAL **: dia_renderer_set_size: assertion `irenderer != NULL'...

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Regenerate SSH keys

I’m a big fan of virtualization. I find it very useful both on my workstation as for the servers. What this means is that I often clone virtual machines to repurpose, run tests or simply add web...

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Streaming video with a Raspberry PI and a Logitech C270

Hi, I wanted to setup a live webcam using a Raspberry Pi (model B, first rev. with 256M RAM) so after checking and happily finding out that my camera is suported I went along. First I installed the...

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Sending email from the Raspberry PI

I run a remote Raspberry PI gracefully hosted by the people over at raspberrycolocatie.nl Since one if it’s jobs is to run a few scripts monitoring various bits and pieces I want it to be able to send...

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A simple retweet bot using a collocated Raspberry PI

I have a Raspberry PI freely collocated by the nice people at pcextreme. Being a Jolla fan I found a new use for it. I made a Retweet bot that retweets everything #Jolla. It’s pretty simple. First you...

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CentOS 6.x misses nobootwait fstab option.

Recently I added a new storage disk to a cloud server. The issue is that this disk might not always be available at boot time. There is an easy fix for this kind of problems. The nobootwait mount...

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Apache IP based restrictions based on a text list. No restart required.

I run a few services on a remote host that I want to restrict access to. For that I use both a password and IP based restrictions. The issue is that for example at home I have a dynamic allocated IP....

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The difference between exclamation mark and asterisk in /etc/shadow

So, with a terrible case of memory lapsus while wanting to disable password login for a user I couldn’t remember what the difference between “!” and “*” is in the /etc/shadow file. Well man 5 shadow to...

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