My Centos, Tips,article,how to,guide,intro to centos,

Through the study of the article,You can increase a few useful designs actual criterion expression (the skill of Regexp) .Compose is built criterion expression is the one part in any administrator routine.The success that returns place to require a condition for construction criterion expression,The angle that need study matchs with mode undertakes reflection,And the time with this kind of skill need many flower has a practice.

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On April 4,Before dawn 4:00 awake,Also cannot fall asleep again,Flounder half many hour,Take notes to go to big originally on the belt eventually.Can get online in house,Should make money nevertheless (10 dollars / day) .Have in old hall free wireless,Meet of course seek far and neglect what lies close at hand.With baby Skype meeting,The Video Clip (Star War Preview) that looked for some of Demo to use,Replied a few Email,Chat on the net with the person of IBM.One in an instant with respect to 7:30,It is Internet speed per hour really.Morning is right now bright already,The spit outside the window is seen dimly.

Breakfast,Bathe,Suit,Change is walked on,Get on a car.Arrived one many a little bit at 10 o'clock Boston Convention%26amp;Exibition Center.

Should arrive eventually at the material goods that arrives yesterday morning originally (the blame of DHL) ,Exhibit at the same time then,At the same time cloth is exhibited,Move trial performance to show a system at the same time.Do sth over and over again a many hour,Do basically at long last calm.

Place midday 1:3 formerly0 hold a seminar,Did not cross time to have only fragmentary three two people." leave or do not leave?" we are faced with Guo heart program in those days similar unfavorable situation and same question.Intensify again then everywhere activity,The result is right still,1:45 had have 10 more than person.Begin immediately then,It is speech of introduced from the northern and western nationalities or from abroad chairman first,Brief introducing Beijing software industry.Somebody quizs after:

Q: Whether does the software company of Beijing have direct business contact with American enterprise?
A: Have,Mix for instance IBM, the business dealings that the enterprise such as Intel keeps in a variety of forms such as the bag outside having, OEM.

Because of this problem,The fan that the black elder brother of that query gets design of child of a blessing.

Formal seminar theme is below,Gross seven enterprises:

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What is Arch? (The introduction of Distrowatch.com)

Arch Linux is a lightweight Linux that optimizes for I686 is issued,The newest and stable version that it included all sorts of software.Software bales with.tar.gz format and manage by the bag implement undertake dogging maintenance,Such design makes software upgrades very easy.With its he issues photograph comparing,What the technology of Arch comparatives is advanced.A few use not quite relatively (be opposite at least me) the thing comes down without reservation (for example,Info page) .Default what Arch installation brings you is a firm systematic base,The custom-built installation that you can increase software package to found your place to need thereby on this foundation.The includes a system to allow you to found yourself conveniently software of Arch is wrapped,This makes by yourself specific configuration compiles a new software package to become special afresh easy.Another target of Arch is the new character that lets an user use Linux as far as possible,For example ReiserFS, Ext3 and Devfs.

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? ? to such as Microsoft for such company,School market is very main,The technology that because they want the clue that makes the child young and pure,likes Microsoft.The educational director John Spencer of SiriusIT of advisory company of open source code expresses,The school is the key that software of open source code can get be adoptioned extensively.After the education that the apple is in the United States gets adoption on the market,People begins to ask about Macs in working circumstance.See the other way that does a business when children,Their horizon was opened.If more children use software of open source code,Be brought up when them adult,When software of open source code sees on adult market,They won't say unaccustomed use this.School market the relative scale that another some of main reason is it -- there is about 26 in England, 000 elementary school,5, 000 middle schools,And the opportunity that influence consumer software purchases -- a lot of parents and their child school use same software.

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? ? 1.Sakai

? ? Sakai is by American indiana university, close root university, Stanford university is mixed on the west the curricular management system of a when Masschusetts Institute of Technology initiated 2004 open source code (CMS) develops a plan.The target of Sakai project is,Development goes to agree with framework of system of sex of foundation of college use E-leaning,Will at at present each college already all sorts of tool module and some package conformity are an organic whole,The course on the new generation network that forms to apply to college education runs a system.

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The installation of ? ? Sakai is used---Linux piece

? ? installs Sakai main component to be the following strides below Linux suddenly---The Etch version that what I use is Debian,But process of the following installation should agree with each Linux publishs edition.

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Besides Perl,Other those who use is source bag installation

The environment is to be below Freebsd6.0

After installing Freebsd,The likelihood is me when compiling Perl incorrect,The Perl that takes oneself with Ports so
Perl is in / below Usr/ports/lang

5.8 what I install
Cd /usr/ports/lang/perl5.8
MakeMake TestMake Install

Install Perl to continue to install Mysql

Of download is Mysql-5.0.24.tar.gz

Installation

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The effect that in recent years the high speed of IT developed ? ? to produce profundity to education,The development that how the education of our China also is being discussed and practice uses IT to promote education.Current state and each local government threw much labor power, material resources and financial capacity to undertake construction and IT teach construction educational informatization.But in these construction works,The hardware construction that we paid close attention to educational informatization only ignored relevant software to build severely however.Can say even,In the software construction that teachs informatization in our country,The error with our active policy and practice serious existence.

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LAMP frame is a kind of when current software develops important pattern, the L in LAMP represents the operating system Linux of the source, a represents the famousest WWW server, also be the Apache of software opening a source, m opens Mysql of software of source data library primely on behalf of function, and the PHP of network script language that P represents a source, also represent Perl and Python, hind both also be.LAMP of famous software opening a source it is free free software, but function is defeated none at corresponding commercial software---E.g. Apache strong the IIS at Microsoft this is well-known fact---Be in so information field is very popular, having a lot of particular application systems at the same time also is to build on LAMP frame.

1The installation of Apache, configuration
Apache is the uses generally WWW server software in UNIX system.The statistic according to Netcraft (Http://news.netcraft.com/archives/web_server_survey.html) ,Internet is at present medium,Having sexagesimal server of more than hundred minutes is the service that use Apache will come to offer a webpage to browse.Apache can say is the webpage server software that makes number of choose and employ persons maximum on the world at present,It can move in FreeBSD, UNIX, Linux not only,Also can install in Windows operating system.

Apache and FreeBSD are same,There also are many branches on software version,At present stabler version has 1.3 to reach 2.Apache1.3 series development is long already,Already very stable,Won't have great modification again.And Apache2 series is the version with a more active development,It and 1.3 the biggest different depend on pair of multi-line Cheng (the support of Multithreaded) .At present Apache2.0.58 is the mainest stable version,And 2.2.2 condition in still be in development.

Apache software is installed on Debian very convenient, more congener than be being installed on Windows system software is more simple, I use a command to do only decided:
#apt-get Install Apache2

In two version of Apache of the existence in Etch,Apache1 and Apache2, former it is a long-tested stable version,Still have a lot of actual application at present;Latter has a lot of new functions,Be in with when the consideration that all receives,What install above us is latter,The version of installation is Apache2.0.55.

It is a few issues that using middling regular meeting actually to encounter below:
The position of file of 1) configuration:
Be located in in Etch / Etc/apache2/apache2.conf
In other version the position mixes the likelihood the name differs somewhat,Also differ with the position of Apache1.

Be in / below Etc/apache2/ ,Still have two list,It is Mods-available and Mods-enabled respectively,Apparent and former it is offerred module,Latter is the started module that can act well normally.If need to make offerred module,act well,Need does a former symbol to join below latter catalog.

2) is default advocate catalog:
/ Var/www/
After the system has been installed, I am in / a simple Index.html file was kept below Var/www catalog, :
#cat Index.html
This Is A Debian Server
Carry an examination to whether be outputted in the client next correct.

The position of 3) Log fileThe action of Log file is very big,Apache has two Log file,One is all records that land this Apache server,/ Var/log/httpd- Access.log,The file recorded disembarkation Ip,Time,Browser type;Another is file of online and wrong record,/ Var/log/httpd-error.log,This file to debugging Apache parameter be have effect very much.Two files are text file,Can be browsed by the text editor such as Nano, editor,The position that records a file and file name are by Httpd.conf medium corresponding configuration is changed.

3) is started, stop to move with what start Httpd server afresh:Apapche2ctl Start(stop Restart)
This command is more useful,After altering configuration document especially.

The problem of catalog of user of 4) individual:Unlike Apache1,The UserDir in file of important modification configuration,Apache2 regards a module as individual user,Need first:Cd /etc/apache2/mods_enabledLn -s /etc/apache2/mods_available/userdir.conf Userdir.confLn -s /etc/apache2/mods_available/userdir.load Userdir.loadApache2ctl Restart
Revise at the same time advocate configuration file,Annotate drops #UserDir Public_html this,Be in again of user Test advocate catalog / an Index.html file is founded below Home/test,Can browse:Http://yourip/~test.

5) supports the issue of Chinese automatically
The default character set of the webpage has parameter AddDefaultCharset ISO-8859-1
At that time when the browser browses Chinese webpage,Can random code,Need hand moves a setting to code means is GBK or GB2312 ability to show Chinese
Take out annotate,Repair instead AddDefaultCharset GB2312 is OK.

Information of state of 6) Apache
After installing Apache,The system that we need to understand a server ceaselessly the circumstance of each respect.Apache2 is built-in the method that Server-status and Server-info examine server information two kinds.Server-status is to point to server state information,The state that we can know Apache to move at present,Current and the systematic resource that includes to take up, online amount.The module information of the version that Server-info basically is indication Apache, to load.
To use these two functions,We must be revised first / Etc/apache2/apache2.conf.
Want him hand to move above all add an ExtendedStatus On,The information that gets otherwise will be not quite detailed.
Find respectively nextAndThese two paragraphs,two paragraphs inside the annotate in front take out,Set good visit limits of authority.If ignored is safe,Can install Allow From All.
Again:Cd /etc/apache2/mods_enabledLn -s /etc/apache2/mods_available/info.load Info.load

Can visit with Http://hostname/server-info in the browser next.


6) is a few otherer I think to compare important configuration parameter:
ServerRoot: ?he ode shows ? Jin Yang ?of flesh of ? of mother of magpie of ? of collect of regret of cover of leg of Che of Ju of ? of deceive of 4 Mo Mian washing with watercolors stalking or branch
Listen: ?n the IP address that Pache of ` of Huo of Chou of city tiny fragments of stone serves to appoint and port,In order to replace acquiescent cost
DocumentRoot: ?BR> HostnameLookups:Appoint the name that records the client side or IP address
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UNIX%26reg;The text with simple traceable is handled,And command in it travel environment middleman and guarantor accepted the text version with the most powerful function handle one of tools.Through be together a series of simple macro,Can finish complicated text version to change,The tool that UNIX provides allows your compose to build almost any wants text version handle engine.

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