unix

Evolution of Service Architecture

Assembly: the only way In principle there was only one: assembly machine language. Hardware and software engineer was a one-role. The guy who was able to project a chip, was the one who was able to program it. Then Fortan (1957), the first high level language compiler was created. C the write once of ’70 …

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dos2unix for poor basic unix

Do you have cygwin base install right? So no dos2unix…you can convert a windows file to unix format with a small tr command like

[bash] awk ‘{ sub("\r$", ""); print }’ winfile.txt > unixfile.txt awk ‘sub("$", "\r")’ unixfile.txt > winfile.txt [/bash] See also the bash secret power addendum.

Debian perfect work environment

Working in a big company, my work laptop came with MS-Windows7 Enterprise installed. But as you imagine, Unix is my preferred desktop environment. So let’s how to configure a perfect Debian Linux for a old wolf consultant like me. You will be able to install commercial software mubmo jumbo like Oracle Express and IBM Websphere …

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Fare il cloud da zero: cloudStorm

A Gioorgi.com ci siamo già occupati di argomenti prettamente sistemistici come la virtualizzazione di ambienti Unix. Visto il successo del Cloud Computing, abbiamo pensato di tornare sull’argomento. In questo articolo mostrerò come creare insieme di macchine configurate in modo omogeno, con il minor effort sistemistico possibile. Si tratta di un primo esercizio molto semplice. Seguiteci…

quicklook – Project Hosting on Google Code

Quick Look is a package to collect system statistics and output pretty graphics and (X)HTML pages. It allows system administrators to have a quick look on the status of their systems, without going for a more advanced (and heavier) solution. Quick Look currently shows… CPU and memory usage Load average and process spawning rates I/O …

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Java HttpClient and Load Balancer bad interactions

Working for a very big customer, I found a very nasty interaction between Sun HttpClient (JDK 1.4) and Http  Load Balancers. In a complex network environment, sometimes you can experience low level TCP/IP comunication errors, because sometimes HttpClient get confused and hangs. The bad behavior of Sun HttpClient is well known: some guys suggested me …

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A very good hosting provider

After my past experience with bad hosting provider, I am happy to say I have find a very good hosting service. If you need VPS hosting, Rimuhosting is a very good choice. After about two years with Rimuhosting, I can summarize their feature here: They have a very good  entry-price for a virtual hosting System …

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