GUI client program for MySQL database server
MySQL Navigator is a MySQL database server GUI client program. The purpose
of MySQL Navigator is to provide a useful client interface to MySQL
database servers, whilst supporting multiple operating systems and
languages. You can currently import/export database, enter queries, get
result sets, edit scrīpts, run scrīpts, add, alter, and delete users, and
retrieve client and server information.

 Homepage: http://sourceforge.net/projects/mysqlnavigator/

What is virtual server?

Virtual server is a highly scalable and highly available server built on a cluster of real servers. The architecture of server cluster is fully transparent to end users, and the users interact with the cluster system as if it were only a single high-performance virtual server. Please consider the following figure.
The real servers and the load balancers may be interconnected by either high-speed LAN or by geographically dispersed WAN. The load balancers can dispatch requests to the different servers and make parallel services of the cluster to appear as a virtual service on a single IP address, and request dispatching can use IP load balancing technolgies or application-level load balancing technologies. Scalability of the system is achieved by transparently adding or removing nodes in the cluster. High availability is provided by detecting node or daemon failures and reconfiguring the system appropriately.
章文嵩博士是著名的Linux集群项目－－LVS（Linux Virtual Server）的创始人和主要开发人员。他目前是TelTel的首席科学家，从事大规模分布式的通信系统的设计和开发。他一直致力于自由软件的开发，并以此为乐。
Wensong Zhang
Chief Scientist

Dr. Zhang has extensive experience in architecting large-scale systems, system software development, system security and the Linux operating system. He is the founder and developer of the Linux Virtual Server project, which is dedicated to build advanced server clustering software for Linux.

Prior to joining TelTel, Dr. Zhang founded China Cluster Networks, a leading provider of cluster based products and services in China. Dr. Zhang also served in management roles at 21Vianet in China. A recognized expert on Linux, he is also a standing member of Co-Create Software Branch of the Chinese Software Industry Association in China.

Mr. Zhang received a Ph.D. degree in Computer Science from Changsha Institute of Technology.
http://www.linuxvirtualserver.org

编缉工具：vi  gedit  ee  leafpad  vim很多
存储为*.sh文件
执行:$ sh  *.sh  # sh *.sh
chmod permission your-scrīpt-name

Examples:
$ chmod +x your-scrīpt-name
$ chmod 755 your-scrīpt-name
例子：
######ginfo.sh   start#########
#
#
# scrīpt to print user information who currently login , current date & time
#
clear
echo "Hello $USER"
echo "Today is \c ";date
echo "Number of user login : \c" ; who | wc -l
echo "calendar"
cal
exit 0
#######end##############
fuqiang@fuqiang-laptop:~/桌面$ sh ginfo.sh
Hello fuqiang
Today is 2008年 05月 27日 星期二 16:00:48 CST
Number of user login : 2
calendar
     五月 2008     
一 二 三 四 五 六 日
          1  2  3  4
5  6  7  8  9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31 

An Open Source product can’t (just as any other product) be introduced into a working environment based solely on a measurement of it strengths and weaknesses. To properly assess product one must also take into account several environmental aspects and naturally the present and future demands of the user. The OSMM of Capgemini takes these factors into account by defining the following application indicators:
    •   Usability – The intended user audience, the experience of that group.
    •   Interfacing – Required connectivity, which standards are applicable. How does this fit into the organisation?
    •   Performance – The expected load and processing capability. The performance
        demands that must be met.
    •   Reliability – What level of availability should the product deliver?
    •   Security – What security measures are required, what restrictions are imposed onto the product.
    •   Proven technology – Does the product use technology that has proven itself in daily production?
    •   Vendor independence – What level of commitment between supplier and user does the product demand?
    •   Platform independence – Is the product available for particular ICT environments
        only, or does the product allow a wide range of platforms.
    •   Support – What level of support is required.
    •   Reporting – What reporting facilities are required.
    •   Administration – Does the product allow the use of existing maintenance tools, the  demands for operational management.
    •   Advice – Does the client require validation / recommendation by independent parties, if so, what is required.
    •   Training – Required training and facilities.
    •   Staffing – Is product expertise bought, taught or hired.
    •   Implementation – Which implementation scenario is preferred?
来源于Capgemini的相关文档
http://www.uk.capgemini.com/

June 22–27, 2008, in Boston, MA, for the 2008 USENIX Annual Technical Conference. Leading researchers from around the globe are coming together to discuss their innovative systems research and cutting-edge practices.
http://www.usenix.org/events/
    About USENIX

USENIX Mission Statement

USENIX, the Advanced Computing Systems Association:

    * Fosters technical excellence and innovation
    * Supports and disseminates research with a practical bias
    * Provides a neutral forum for discussion of technical issues
    * Encourages computing outreach into the community at large

Since 1975, the USENIX Association has brought together the community of engineers, system administrators, scientists, and technicians working on the cutting edge of the computing world.

The USENIX conferences have become the essential meeting grounds for the presentation and discussion of the most advanced information on the developments of all aspects of computing systems.

USENIX supports its members' professional and technical development through a variety of on-going activities, including:

    * Member benefits
    * Annual technical and system administration conferences
    * Informal, specific-topic conferences such as security, internet technology, and mobile computing—as many as nine technical conferences per year
    * A highly regarded tutorial program
    * SAGE, a Special Interest Group for system administrators
    * Student programs that include stipends to attend conferences, low student member fees, a university outreach program, and best paper awards
    * Online library with proceedings from each USENIX conference and the magazine, ;login:
    * Participation in various ISO, IEEE and Open Group standards efforts
    * USENIX supports a "Good Works" program.
    * International Programs, including an International Affiliate Program. USENIX also co-sponsors conferences by international technical groups.
    * Two prestigious annual Awards which recognize public service and technical excellence: The Lifetime Achievement (Flame) Award and The Software Tools Users Group Award. SAGE sponsors the annual SAGE Outstanding Achievement Award recognizing outstanding achievement in system administration.
    * Membership in the Computing Research Association and The Open Group