Michalis on .*

Q&A site για Κηπουρική (ερωτήσεις και απαντήσεις για Κηπουρική)

2011-09-26T08:15:00.000+04:00

Πρόσφατα δημιουργίσαμε το "Ρώτα το Κηπολόγιο!", μια διαδραστική σελίδα Ερωτήσεων και Απαντήσεων (Q&A site) με θέμα την κηπουρική. Το νέο site αποτελεί ένα spin off του Κηπολογίου και βασίζεται στην πλατφόρμα OSQA. Ακολουθεί τη φιλοσοφία των διαφόρων stackexchange sites με δημοφιλέστερο, στην κοινότητα των developers, το stackoverflow. Σχετικά με το site: Στο "Ρώτα το Κηπολόγιο!" μπορείς να

FreeBSD on the SheevaPlug HOWTO

2010-08-01T12:29:00.016+04:00

Six months ago I purchaged a SheevaPlug computer. After sharing my experiences about the device with my friend Minas, he managed to get his hands on the similar Sheeva computer and he installed FreeBSD on it. The following article/HOWTO, on installing FreeBSD on the Sheeva is written by him. Minas is a FreeBSD advocate for many years now. Recently my friend Jim, bought the plugcomputer Sheeva

Wireless connection affected by neighbor

2010-06-29T00:40:00.005+04:00

Something strange happed this evening. The wireless connection at home had such a bad signal quality that none of my devices could connect to the router. At first, I did a router reset. Didn't help. Then I tried to reconnect the cables on the router, just in case. No success here also. Finally, I disabled all of the electronics around the router to make sure it wasn't an interference issue.

Η εμπειρία μου με το Android. Ελλάδα, Ιούνιος 2009 - Απρίλιος 2010

2010-04-29T21:58:00.001+04:00

Τον Ιούνιο του περασμένου χρόνου απέκτησα ένα HTC Magic 32A κινητό από την Cosmote. Μέχρι και σήμερα, είναι το πιο διαδεδομένο Android κινητό που πωλείται στην Ελλάδα από τις εταιρίες κινητής τηλεφωνίας. Στον τομέα της υποστήριξής του όμως αναγνωρίζω προβλήματα, κατά τη γνώμη μου σημαντικά, για την διάδοση της συγκεκριμένης πλατφόρμας στην Ελλάδα.Το συγκεκριμένο τηλέφωνο το αγόρασα με Android

Feeding images to a digital picture frame

2010-02-14T14:36:00.007+03:00

My digital picture frame has a limited amount of build in memory. In order to put more pictures on the frame, I choose to resize them to the frame's native resolution of 800x480.I' m pretty sure that there are applications that manage image collections on Linux and also do image resizing. However, I prefered to use ImageMagic and some scripting to do the job.My script, dir2w820.sh, takes files

Switching to Opensuse

2009-11-29T20:57:00.016+03:00

1 upgrade of OpenSuse 11.1 and 2 installations of 11.2In the last 3.5 years I used Gentoo Linux as the operating system of choice for my personal computer. Apart from Gentoo, I had also done and maintained an ubuntu installation, for use in another personal computer. Eventualy, I got tired of gentoo compilations, and ubuntu sadly collapsed under its own weight. Time to try something new, I say..

Contact info on a QR Code

2009-10-03T19:17:00.005+04:00

Bar codes containing any kind of information seem to pop up everywhere these days. They get a big boost from mobile devices which support bar code scanner applications like zxing. The format most commonly used is QR Code. The future of this idea seems promising (quoting): For example, Wikipedia displays their QR code on the Wikipedia site. I could also see QR codes as a potential business card

Creating a shared library on various platforms

2009-08-22T17:54:00.006+04:00

When applications get bigger and code needs to be shared among different applications, then shared libraries sound like a great idea. To get this done, a multi platform compilation sprint race begins.Shared libraries are libraries that are loaded by programs when they start. When a shared library is installed properly, all programs that start afterwards automatically use the new shared library.

30 days with HTC magic: apps I installed

2009-08-01T18:55:00.008+04:00

Its been 30 days with HTC magic. I have installed the following apps, all from the Market: AK Notepad AndNav2 Any Cut Astrid Task/Todo list Barcode Scanner CompareEverywhere Compass Connectot File Browser GPS Status Greek Input Method My Maps Editor My Tracks Netcounter Places Directory Shazam Text-To-Speech Library - needed by

EliteBook 8730w - OpenSuse 11.1 - Multimedia keys

2009-07-25T11:31:00.003+04:00

To have the volume multimedia keys to work on OpenSuse 11.1 and the elitebook 8730w, you will need to configure the keys with xmodmap:put in ~/.Xmodpap:keycode 176=XF86AudioRaiseVolumekeycode 174=XF86AudioLowerVolumeput in .kde4/Autostart/Xmodmap-autoload:#!/bin/shxmodmap ~/.Xmodmapissue:chmod +x .kde4/Autostart/Xmodmap-autoloadYou may need to check the location of your KDE Autostart directory.

femio - A python reader for Finite Element Models

2009-07-19T13:57:00.003+04:00

femio is an application that allows you to read a Finite Element Model in one of the supported formats and provide tools and functions on the model's contents. Also, it provides the required functionality to allow the user to create tools and manipulate data. Such tools are: model statistics, model image view (screen shot), keyword removal or substitution, etc.You can see the projects home page

(wireless) Kodak picture frame w820 and Linux.

2009-05-24T21:22:00.006+04:00

2 days ago I bought a KODAK EASYSHARE W820 Wireless Digital Frame. I intended of using it to stream media from my Linux computer, preferably using its wireless capabilities. The disappointing thing is that the manufacturer only provides software for Windows.Connection to the internet is quite easy and straight forward. Just follow the instructions in the documentation. When connected, the frame

Fake road sign advertisement

2009-04-28T21:08:00.010+04:00

Creating fake road signs is fun and quite popular on the internet. I gave it a go and I found out it is not that difficult to create one using standard tools (ex. gimp). Here is the result of my first attempt:An advertisement of papitsa's blog.

Blogger Tag Cloud Widget

2009-04-18T00:13:00.011+04:00

I wanted to have a Tab Cloud in my blog. However, blogger provides only the Label widget which gives only a list of the blog's labels.I found this blog entry , which produced something very similar to what I wanted. I modified it so that:it is more to my tasteallows for further development and easier modifications.You can see the resulting Tag Cloud on this blog (collumn on the right) and also in

Determining the age of a Linux installation.

2009-03-05T10:38:00.018+03:00

Have you ever been curious of how old your current Linux installation is?Three indirect ways of finding this out follow:Retrieve info from the filesystem (ext2-ext3 only).Provided your installation has an ext[23] filesystem,run as root: dumpe2fs -h |grep "Filesystem created"Usually, at least the boot partition is of this type.Investigate the dates of files in the root directory.Run the

Αφίσα με θέμα την Οδικη Ασφάλεια

2008-11-01T22:49:00.002+03:00

Με αφορμή μια προκήρυξη διαγωνισμού αφίσας με θέμα την Οδική Ασφάλεια από το ΓΕΣ, έφτιαξα την παρακάτω αφίσα:η οποία έτυχε ιδιαίτερα θερμής υποδοχής από την διοίκηση της μονάδας όπου υπηρετώ.Η αφίσα σχεδιάστηκε έχοντας σαν πρωταρχικούς στόχους την οπτική απλότητα και την άμεση αποτύπωση του μηνύματός της στον αποδέκτη.Η απλότητα της αφίσας καταδεικνύεται από τα τρία γραφικά στοιχεία που

Remove obsolete objects form a library archive using GNU make

2008-05-01T14:55:00.003+04:00

The build system of an application I work on, stores each compilation object in a library archive (using GNU ar). With every project build, the contents of this archive are updated with new objects from the compilation. This is achieved by running ar -cru library.a $(OBJECTS)Moreover, the archive needs also to be updated when files (and thus their objects) are removed from the project. The most

Θεσσαλονίκη - Καλαμάτα, αναζήτηση δρομολογιού ΟΣΕ από το www.ose.gr

2008-04-27T19:30:00.001+04:00

Στη προσπάθεια μου να μετακινηθώ μέ σιδηρόδρομο από τη Θεσσαλονίκη στην Καλαμάτα, επισκέφτηκα τον ιστοτόπο του ΟΣΕ (www.ose.gr). Η ημερομηνία του ταξιδιού μου ήταν η 12 Μαΐου 2008, ενώ η αναζήτηση των δρομολογίων έγινε στις 20 Απριλίου.Συνάντησα τα εξής προβλήματα:Βάζοντας για αφετηρία τη Θεσσαλονίκη, δεν υπάρχει προορισμός στην Πελοπόννησο.Βάζοντας για αφετηρία τον "ΣΣ. Καλαμάτας", στην

Release cvsxxdiff v1.5

2008-04-22T22:58:00.001+04:00

cvsxxdiff version 1.5 was released today. In this release many significant changes are introduced, as you can see from the ChangeLog. At the moment, there are no plans for a new project version with major features.

Αποστολή SMS από τη γραμμή εντολών

2008-03-29T22:34:00.001+03:00

Από τα πρώτα προγράμματα που έγραψα σε C ήταν το mycosmos, ένα πρόγραμμα αποστολής SMS από τη γραμμή εντολών μέσω μιας web υπηρεσίας. Όμως ο καιρός πέρασε, η web υπηρεσία άλλαξε και το mycosmos έπαψε να δουλεύει. Έτσι τον Δεκέμβριο του 2007 το ξαναέγραψα από την αρχή, δημιουργώντας αυτή τη φορά το climycosmos.Η έκδοση 0.4 του climycosmos είναι αρκετά πλήρης. Είναι απολύτος αυτόνομη από εξωτερικές

Office decoration using origami

2008-03-25T13:41:00.000+03:00

My interest in origami folding, found some usage as means of office decoration. Some nice examples are given in the photographs that follow.RosesBird (flying parrot) over ChamaedoreaBirds hanging from the ceilingThis technique creates quite a good result and a pleasant environment. The existence of moving decorations that one can even play with, give joy. Also, the addition of colors in the

Report compilation total time using GNU make

2008-03-11T23:57:00.002+03:00

When working constantly on the same application, it is very useful to have an idea of the time it takes to compile. Having this information allows you to plan your work ahead, compare machines, developing environments, etc.I have put together this Makefile, to print the total compilation time. It requires gmake and the UNIX shell utilities date, bc, echo and printf.Makefile# Time expressed as

Folding paper for fun and office decoration

2008-03-09T12:27:00.000+03:00

A few months ago I became interested on paper folding as a hobby. I searched the web for origami diagrams. Following the instructions I found, I created some of my own.I showed them around and after motivation from a colleague, I used these paper foldings to decorate my office space. I hanged some of the from the ceiling using a fishing rod. I chose shapes of birds to hand and placed them on top

xkcd webcomic

2008-02-16T01:15:00.000+03:00

Το xkcd είναι ένα ενδιαφέρον webcomic. Ο συγγραφέας του το περιγράφει σαν "a webcomic of romance, sarcasm, math, and language". Η θεματολογία του είναι αρκετά προσφιλής για ανθρώπους που ασχολούνται με υπολογιστές (compiler complaint) και την τεχνολογία γενικότερα.

Initialize my blog

2006-06-15T21:29:00.000+04:00

date: Thu Jun 15 20:31:46 EEST 2006Initialize my blog.