Gregorius' Blog

Collecting information about techie events in Vienna

2007-03-22T08:45:00.000-07:00

This blog is dying, caused by the fact that I'm not a good blogger at all.

Okey, back to the topic I'd like to write now about...

Techie (=computer technology related) events in Vienna. There are not so many, usually. But this year seems be better. There would be: European Perl Conference, Semantic conference, DeepSec and others. Currently I'm collecting some information about them. The idea behind: to make a feed about techie events here in Vienna, Austria

I will publish more soon...

OpenSolaris starter kit

2007-03-02T07:37:00.000-08:00

There is a OpenSolaris starter kit to get for free!

It includes:

Solaris Express
3 Live-CDs: Nextenta, BelleniX and ShilliX
Sun Studio compilers

Solaris 10 11/06 with Trusted Extensions

2006-12-12T22:56:00.000-08:00

Sun has released Solaris 10 11/06 on 11.12.2006. Internally, it's called 'Update 3'. The biggiest features for this update are Trusted Extensions and Secure by Default. Yes, all of the security features you loved back in Trusted Solaris, are now standard as part of Solaris 10. Get an overview of new features

Nagios 2.6

2006-11-29T02:03:00.001-08:00

On 27th of November the new version (2.6) of Nagios is has been released. But why a plugin timeout cause a CRITICAL state? In my humble opinion this makes no sens at all.

Niagara-3

2006-10-19T00:05:00.001-07:00

Sun Microsystems engineers have begun designing Niagara 3, a second sequel to the company's ambitious lower-end processor. John Fowler, executive vice president of Sun's server division, confirmed the development in an interview Tuesday and suggested it will continue Sun's push to squeeze more processing cores onto the chip. This new member of the Sparc family will be built using a manufacturing process with 45-nanometer circuitry elements, he said.

New Sun Processors - Fall Microprocessor Forum 2006

2006-10-11T00:25:00.000-07:00

The Fall Microprocessor Forum 2006 is nearly over. Sun presented the new Niagara-2 and SPARC64-VI.

The Niagara-2

will run twice as many threads parallel as it's predecessor. Each of it's 8 cores will handle 8 threads parallel. There will be perhaps a new Floating-Point/Graphics Unit (FGU) shared by the cores. The new Stream Processing Unit (SPU) will handle more algorithms (RC4, DES, 3DES, AES-128/192/256, MD5, SHA-1/256).

The SPARC64-VI

is the dual-core version of SPARC64-V.

Teaching children programming

2006-10-04T00:58:00.000-07:00

There are many approaches to teach children programming. Bellow is a collection of some related links which may be helpful.

Powerful alternative to Ruby On Rails

2006-08-31T01:14:00.000-07:00

Ruby On Rails is an open-source web framework coded in Ruby. It strives for simplicity and allowing real-world applications to be developed in less code than other frameworks and with a minimum of configuration. But it has a powerful alternative called Nitro. You can find some tutorials about Nitro on Oxyliquit It seems, that Nitro can do much more as RoR.

Micro TCP/IP Stack

2006-08-03T02:50:00.000-07:00

The µTCP/IP can be used in 8 bit microcontrollers. Such microcontrollers can today be found in toasters and microwave ovens.

Solaris 10 - a bothersome bug in UFS

2006-07-06T05:36:00.000-07:00

Let see:

$ df -h

/dev/md/pgsqlindg/dsk/d350 35G 16384E 37G 50129137443513% /global/pgsqlin

This UFS bug is bothering me, because I'm using Nagios to monitor also disk space and Nagios notify me a critical state. So I've to disable disk space checking and wait for kernel jumbo patch for this problem.

Bash scritping: more hints for working with numbers

2006-07-06T05:18:00.000-07:00

As an addendum to my first post about bash scripting and numbers here are some more nice information.

* Check if $VAR is a positive integer:

if echo "$VAR" | egrep --null "^[[:digit:]]+$" > /dev/null ; then
echo Integer: $VAR
else
echo $VAR isn't an integer.
fi

* Check if $VAR is a positive real number:

if echo "$VAR" | egrep --null "^[[:digit:]]+(\.[[:digit:]]+)*$" > /dev/null ; then
echo Real number: $VAR
else
echo $VAR isn't a real number.
fi

Enjoy!

Green Deck-House - a historic building in Poznań

2006-07-03T02:13:00.000-07:00

See at this: Looks like quite normal green deck-house? But it is a historic building from 1913 and it is the last one of this kind. It was once a tramway station in my home city.

Ethereal® is now Wireshark

2006-06-29T14:23:00.000-07:00

Ethereal® is since 07.06.2006 Wireshark. It's a great network analysis tool.

Sun announces PostgreSQL for Solaris Integration

2006-06-28T07:29:00.000-07:00

PostgreSQL: News: Sun announces PostgreSQL for Solaris Integration, Support

This is great. Beside this the company where I'm working is using PostgreSQL on Solaris 10 since some time already.

Bash scripting: checking if a variable is a number

2006-06-27T01:11:00.000-07:00

Sometime ago I had a simple problem with bash scripting. I liked to check if a variable is a number or not. First I'd looked up into Advanced Bash Scripting Guide but didn't found anything. So my first approach was:

[ -z "`echo $VARIABLE | tr -d "[:digit:]"`" ]

But I didn't like it because of tr usage. So after some discussion with other people I came to the following solution:

[ $VARIABLE -eq $VARIABLE ]

It works great and could be used in a bash script like this:

if [ $VARIABLE -eq $VARIABLE 2> /dev/null ]; then
echo $VARIABLE is a number
else
echo $VARIABLE isn't a number
fi

Nagios 2.4

2006-06-13T05:57:00.000-07:00

Just downloaded version 2.4 sources. Trying to config it but something is still wrong. Last time I've done compilation and configuartion of Nagios was during version 2.0 and I hadn't so many problems as now. First it seems that the init script have to be rewritten. stop method doesn't work at all.

SEC - simple event corellator

2006-06-08T02:44:00.000-07:00

Just startet testing SEC - simple event corellator which seems to be a powerfull log monitoring perl script.

Free Wiki Hosting

2006-06-07T08:44:00.000-07:00

I've just started looking around for a nice free wiki hosting and after some time spent with searching over the web, I've noticed that the following Wiki hosting offerings looks quite good to evaluate them:

Cyborg Name Generator

2006-06-07T07:21:00.000-07:00

There is a Cyborg Name Generator on the net. Nice.

Something about me

2006-06-06T07:09:00.000-07:00

Okay, now something about me. I'm currently living in Vienna, Austria but I'm coming from Poznań, Poland. Below a picture of Poznań Old Town. I love my homecity so much and I'm missing it.

CLCL

2006-06-02T00:29:00.000-07:00

CLCL is a really nice clipboard utility.

Linux Live - build your own Linux LiveCD

2006-05-30T02:20:00.000-07:00

Linux Live is a set of shell scripts which allows you to create own LiveCD from every Linux distribution. Just install your favourite distro, remove all unnecessary files (for example man pages and all other files which are not important for you) and then download and run these scripts to build your custom Live Linux.

Portrait Illustration Maker

2006-05-26T08:51:00.000-07:00

Portrait Illustration Maker - funny web application.

SQLite

2006-05-26T01:32:00.000-07:00

SQLite is a small C library that implements a self-contained, embeddable, zero-configuration SQL database engine.

Technorati: sql database

Nagios

2006-05-26T01:06:00.000-07:00

Nagios is an open source host, service and network monitoring program. I'm using it inside the company I'm working. But I've some problems with it and nobody can explain them....

stock.xchng

2006-05-26T00:17:00.000-07:00

stock.xchng is a really nice photo site.

Technorati: photo

Second blogging tool

2006-05-24T08:44:00.000-07:00

Okay, Bleezer was nice but kind of unstable. Now using w.bloggar. seems to be useful.

Technorati: freeware blogger tools

Tools for Blogger

2006-05-24T08:25:00.000-07:00

I've just started to test some tools which could be a help for making this blog living. This message is made with Bleezer.

Technorati: freeware blogger tools

Restart

2006-05-24T05:10:00.000-07:00

I've already deleted some entries and I'm trying to restart my blog again. Hopefully it will works better for this time.