Open source enterprise software company Red Hat has updated its virtualization platform, Red Hat Enterprise Virtualization (REV), to include support for desktop virtualization, the company announced Monday. more from http://jk.scanmon.com/en
Archive for the ‘IT technology’ category
Red Hat Moves Into Desktop Virtualization
March 30th, 2010Minimalist Linux desktops
March 30th, 2010
by Richard Hillesley
Lightweight desktops have a multitude of uses, on netbooks, for mobile devices, for older hardware, for users with limited requirements of their systems, for connecting to applications in the cloud, and for bare knuckled programmers who prefer to work closer to the metal.
Puppy lightweight Linux. 
The most popular desktops for Linux – KDE and GNOME – are are equal to the demands of most users, but if you are a sysadmin or programmer who does most of his or her work in a shell, or on the command line through vim or vi or Emacs, your demands of a desktop environment or a window manager may be relatively limited. A fully-featured desktop environment may, perversely, sometimes get in the way of useful work. For more please visit http://jk.scanmon.com/en
Learn Linux, 101: Process execution priorities
March 21st, 2010This article grounds you in the basic Linux techniques for managing execution process priorities. Learn to:
- Understand process priorities
- Set process priorities
- Change process priorities
This article helps you prepare for Objective 103.6 in Topic 103 of the Linux Professional Institute’s Junior Level Administration (LPIC-1) exam 101. The objective has a weight of 2.
To get the most from the articles in this series, you should have a basic knowledge of Linux and a working Linux system on which you can practice the commands covered in this article. Sometimes different versions of a program will format output differently, so your results may not always look exactly like the listings and figures shown here. The results in the examples shown here were obtained on a Ubuntu 9.10 (Karmic Koala) distribution. This article builds on the concepts discussed in the previous article “Learn Linux 101: Create, monitor, and kill processes.”
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Linux, like most modern operating systems, can run multiple processes. It does this by sharing the CPU and other resources among the processes. If one process can use 100% of the CPU, then other processes may become unresponsive.
Learn Linux, 101: Manage shared libraries
March 21st, 2010
In this article, learn to find and load the shared libraries that your Linux programs need. Learn to:
- Determine which libraries a program needs
- Know how the system finds shared libraries
- Load shared libraries
This article helps you prepare for Objective 102.3 in Topic 102 of the Linux Professional Institute’s Junior Level Administration (LPIC-1) exam 101. The objective has a weight of 1.
To get the most from the articles in this series, you should have a basic knowledge of Linux and a working Linux system on which you can practice the commands covered in this article. Sometimes different versions of a program will format output differently, so your results may not always look exactly like the listings and figures shown here. In particular, many of the examples in this article come from 64-bit systems. We have included some examples from 32-bit systems to illustrate significant differences.
Learn Linux, 101: File editing with vi
March 21st, 2010In this article, learn the basic use of the vi editor, which is almost always available on any Linux or UNIX system. Learn to:
- Navigate a document using vi
- Use basic vi modes
- Insert, edit, delete, copy, and find text
This article helps you prepare for Objective 103.8 in Topic 103 of the Linux Professional Institute’s Junior Level Administration (LPIC-1) exam 101. The objective has a weight of 3.
To get the most from the articles in this series, you should have a basic knowledge of Linux and a working Linux system on which you can practice the commands covered in this article. Sometimes different versions of a program will format output differently, so your results may not always look exactly like the listings and figures shown here.
Speeding up dynamic websites via an nginx proxy
February 20th, 2010Many of us are familiar with the use of Apache for hosting websites. It might not be the fastest webserver but it is extraordinarily popular, extremely flexible, and a great choice for most people. However there are times when it can struggle, and placing a proxy in front of it can be useful.
nginx is a very small, fast, and efficient HTTP server with a lot of built in smarts to allow it to work as a reverse proxy, and not just for HTTP, it also supports SMTP.
» Read more: Speeding up dynamic websites via an nginx proxy
installing nginx + php-fpm using centos.alt.ru & EPEL repo in CentOS
February 20th, 2010I have create post about installing nginx + php-fpm from source before in here http://adityo.blog.binusian.org/?p=428. In this tutorial i will create a more simple way installing nginx + php-fpm using yum with centos.alt.ru & EPEL repo.
Here it’s goes:
- Create repo
# cd /etc/yum.repos.d
# vim rusia-repo.repo
- and paste this
[rusia-repo]
name=CentOS-$releasever – rusia packages for $basearch
#baseurl=file:///raid/RH/CentOS/$releasever/local/$basearch
baseurl=http://centos.alt.ru/pub/repository/centos/5/i386/
enabled=1
gpgcheck=0
protect=1
- Enable EPEL repo
# rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/$(uname -m)/epel-release-5-3.noarch.rpm
- Install nginx and php-fpm
# yum install nginx php-fpm
» Read more: installing nginx + php-fpm using centos.alt.ru & EPEL repo in CentOS
Lightweight X11 Desktop Environment
January 28th, 2010LXDE is a GPL licensed open source desktop environment for Unix and other POSIX compliant platforms, such as Linux. The name LXDE stands for “Lightweight X11 Desktop Environment”.
LXDE is an energy saving and extremely fast and performing desktop solution. It works well with computers on the low end of the performance spectrum such as new generation netbooks and other small mobile computers. LXDE is designed for cloud networks such as local freifunk clouds or the global Internet cloud. It can be built on top of various Linux distributions such as Ubuntu or Debian. It provides a fast desktop experience connecting easily with applications in the cloud and supports a wealth of programs, that can be installed with Linux systems locally. LXDE already supports many computer processor architectures including Intel, MIPS and ARM.
The LXDE project started 2006 when Hong Yen Jee from Taiwan, known as PCMan, published the first component PCMan File Manager. Today the LXDE team has grown into an international community of developers, designers and contributors from all over the world.
» Read more: Lightweight X11 Desktop Environment
Research on the image watermarking
January 28th, 2010ScanMom studio pictures have recently been doing research to play a watermark, image watermark is a very good fight against Daolian way, even if you picture was reproduced, with your website logo is a good means of publicity.
I am not a programmer universal use GD library, but the method of ImageMagic software, you can go to the official website to download to use, and detailed instructions (in English). With the program can batch image watermarking problem
This article comes from: http://jk.scanmon.com/en/wp/2010/01/about_image_watermark.html
Have this problem on video in the Jacky on the message, ScanMom studio has also done technical support in this regard http://www.scanmon.com
Jacky for everyone to look at the picture I did add watermark
ImageMagick is a stable set of tools and development kits that can be used to read, write and deal with more than 89 kinds of basic format of the image files, including the popular TIFF, JPEG, GIF, PNG, PDF, and PhotoCD and other formats. The use of ImageMagick, you can web applications according to the needs of dynamically generated images, but also can be a picture or picture sequence to change the size, rotation, sharpening, subtractive or add special effects and results of operations in the same format or other format . The operation of the picture can be carried out through the command line, you can also use C / C + +, Perl, Java, PHP, Python, or Ruby programming to complete. ImageMagick also provides a high-quality 2D tool kit, in part to support SVG. Now, ImageMagic the main focus on performance, reduce the bug and providing a stable API and ABI on.
ImageMagick powerful, but it is free of charge.
ImageMagick functions
1. The pictures from one format to another format, including direct convert ico icon.
2. To change the size, rotation, Sharpen (sharpen), subtractive, picture effects
3. Thumbnails synthesis map (a montage of image thumbnails)
4. Suitable for the background of a transparent web images
5. Will be a group of pictures made gif animation, direct convert
6. Will be a few pictures made of a combination of image, montage
7. Write or draw a picture graph, with text shadows and border rendering.
8. To the Canadian border or frame pictures
9. Get some pictures of the characteristics of information
10, almost including the regular gimp plug-in functionality can be done. Even the rendering of various curve parameters. Just the wording of the command, complicated enough.
ImageMagick almost any non-proprietary operating system, compiler, both 32-bit or 64-bit CPU, including * nix, Windows ‘95 / ‘98 / ME / NT 4.0/2000/XP, Macintosh (MacOS 9 / 10 ), VMS, and OS / 2.
317 days a computer running the server off the shelf
January 22nd, 2010
一台运行317天的今天服务器下线维护，在次之前该服务器一直负担这服务器集群调度的工作，本来认为这台服务器可以一直运行下去，但是根据公司要换机房的决定，这台服务器只好在机房下架 。 服务器型号 dell 1850 ，运行系统 debian 5 ，运行业务软件 lvs。
A computer running 317 days of today the server downtime for maintenance, in the second until the server has to pay for the server cluster scheduling work, would have thought that this server can be running forever, but the incumbent, according to the company’s decision room, this server had no choice but room off the shelf. Server model dell 1850, operating system debian 5, run business software lvs。
