linux 下JDK的卸载与安装

###################################################JDK卸载

[[email protected]]#java-version//检查JDK版本命令

javaversion"1.4.2"

gij(GNUlibgcj)version4.1.220080704(RedHat4.1.2-46)

[[email protected]]#rpm-qa|grepjdk//检查命令1

[[email protected]]#rpm-qa|grepgcj//检查命令2

java-1.4.2-gcj-compat-1.4.2.0-40jpp.115

libgcj-4.1.2-46.el5

java-1.4.2-gcj-compat-src-1.4.2.0-40jpp.115

libgcj-devel-4.1.2-46.el5

java-1.4.2-gcj-compat-devel-1.4.2.0-40jpp.115

libgcj-src-4.1.2-46.el5

[[email protected]]#yum-yremovejava-1.4.2-gcj-compat-1.4.2.0-40jpp.115Loadedplugins:rhnplugin,security//卸载命令

ThissystemisnotregisteredwithRHN.

RHNsupportwillbedisabled.

SettingupRemoveProcess

ResolvingDependencies

-->Runningtransactioncheck

--->Packagejava-1.4.2-gcj-compat.i3860:1.4.2.0-40jpp.115settobeerased

-->ProcessingDependency:java-gcj-compatforpackage:jakarta-commons-codec

-->ProcessingDependency:java-gcj-compatforpackage:jakarta-commons-codec

-->ProcessingDependency:java-gcj-compatforpackage:antlr

-->ProcessingDependency:java-gcj-compatforpackage:antlr

-->ProcessingDependency:java-gcj-compatforpackage:junit

-->ProcessingDependency:java-gcj-compatforpackage:junit

-->ProcessingDependency:java-gcj-compatforpackage:jakarta-commons-logging

-->ProcessingDependency:java-gcj-compatforpackage:jakarta-commons-logging

-->ProcessingDependency:java-gcj-compat>=1.0.31forpackage:tomcat5-jsp-2.0-api

-->ProcessingDependency:java-gcj-compat>=1.0.31forpackage:tomcat5-jsp-2.0-api

-->ProcessingDependency:java-gcj-compat>=1.0.64forpackage:gjdoc

-->ProcessingDependency:java-gcj-compat>=1.0.64forpackage:gjdoc

-->ProcessingDependency:java-gcj-compatforpackage:jakarta-commons-httpclient

-->ProcessingDependency:java-gcj-compatforpackage:jakarta-commons-httpclient

-->ProcessingDependency:java-gcj-compat>=1.0.31forpackage:tomcat5-servlet-2.4-api

-->ProcessingDependency:java-gcj-compat>=1.0.31forpackage:tomcat5-servlet-2.4-api

-->ProcessingDependency:java-gcj-compatforpackage:bsf

-->ProcessingDependency:java-gcj-compatforpackage:bsf

-->ProcessingDependency:java-gcj-compatforpackage:xalan-j2

-->ProcessingDependency:java-gcj-compatforpackage:xalan-j2

-->ProcessingDependency:java-gcj-compatforpackage:xmlrpc

-->ProcessingDependency:java-gcj-compatforpackage:xmlrpc

-->ProcessingDependency:java-gcj-compatforpackage:bsh

-->ProcessingDependency:java-gcj-compatforpackage:bsh

-->ProcessingDependency:jaxp_parser_implforpackage:xalan-j2

-->ProcessingDependency:java-1.4.2-gcj-compat=1.4.2.0-40jpp.115forpackage:java-1.4.2-gcj-compat-src

-->ProcessingDependency:java-1.4.2-gcj-compat=1.4.2.0-40jpp.115forpackage:java-1.4.2-gcj-compat-devel

-->Runningtransactioncheck

--->Packageantlr.i3860:2.7.6-4jpp.2settobeerased

--->Packagebsf.i3860:2.3.0-11jpp.1settobeerased

--->Packagebsh.i3860:1.3.0-9jpp.1settobeerased

--->Packagegjdoc.i3860:0.7.7-12.el5settobeerased

--->Packagejakarta-commons-codec.i3860:1.3-7jpp.2settobeerased

--->Packagejakarta-commons-httpclient.i3861:3.0-7jpp.1settobeerased

--->Packagejakarta-commons-logging.i3860:1.0.4-6jpp.1settobeerased

--->Packagejava-1.4.2-gcj-compat-devel.i3860:1.4.2.0-40jpp.115settobeerased

--->Packagejava-1.4.2-gcj-compat-src.i3860:1.4.2.0-40jpp.115settobeerased

--->Packagejunit.i3860:3.8.2-3jpp.1settobeerased

--->Packagetomcat5-jsp-2.0-api.i3860:5.5.23-0jpp.7.el5_3.2settobeerased

--->Packagetomcat5-servlet-2.4-api.i3860:5.5.23-0jpp.7.el5_3.2settobeerased

--->Packagexalan-j2.i3860:2.7.0-6jpp.1settobeerased

--->Packagexmlrpc.i3860:2.0.1-3jpp.1settobeerased

-->ProcessingDependency:/usr/bin/rebuild-gcj-dbforpackage:eclipse-ecj

-->ProcessingDependency:/usr/bin/rebuild-gcj-dbforpackage:eclipse-ecj

-->RestartingDependencyResolutionwithnewchanges.

-->Runningtransactioncheck

--->Packageeclipse-ecj.i3861:3.2.1-19.el5settobeerased

-->FinishedDependencyResolution

DependenciesResolved

===============================================================================================

PackageArchVersionRepositorySize

===============================================================================================

Removing:

java-1.4.2-gcj-compati3861.4.2.0-40jpp.115installed441

Removingfordependencies:

antlri3862.7.6-4jpp.2installed2.5M

bsfi3862.3.0-11jpp.1installed812k

bshi3861.3.0-9jpp.1installed1.2M

eclipse-ecji3861:3.2.1-19.el5installed18M

gjdoci3860.7.7-12.el5installed1.7M

jakarta-commons-codeci3861.3-7jpp.2installed207k

jakarta-commons-httpclienti3861:3.0-7jpp.1installed1.3M

jakarta-commons-loggingi3861.0.4-6jpp.1installed233k

java-1.4.2-gcj-compat-develi3861.4.2.0-40jpp.115installed81k

java-1.4.2-gcj-compat-srci3861.4.2.0-40jpp.115installed0.0

juniti3863.8.2-3jpp.1installed602k

tomcat5-jsp-2.0-apii3865.5.23-0jpp.7.el5_3.2installed163k

tomcat5-servlet-2.4-apii3865.5.23-0jpp.7.el5_3.2installed250k

xalan-j2i3862.7.0-6jpp.1installed5.1M

xmlrpci3862.0.1-3jpp.1installed864k

TransactionSummary

===============================================================================================

Install0Package(s)

Update0Package(s)

Remove16Package(s)

DownloadingPackages:

Runningrpm_check_debug

RunningTransactionTest

FinishedTransactionTest

TransactionTestSucceeded

RunningTransaction

Erasing:java-1.4.2-gcj-compat-devel1/16

Erasing:bsf2/16

Erasing:antlr3/16

Erasing:tomcat5-servlet-2.4-api4/16

Erasing:jakarta-commons-codec5/16

Erasing:java-1.4.2-gcj-compat-src6/16

Erasing:jakarta-commons-logging7/16

Erasing:junit8/16

Erasing:tomcat5-jsp-2.0-api9/16

Erasing:xmlrpc10/16

Erasing:java-1.4.2-gcj-compat11/16

Erasing:xalan-j212/16

Erasing:jakarta-commons-httpclient13/16

Erasing:bsh14/16

Erasing:gjdoc15/16

Erasing:eclipse-ecj16/16

Removed:

java-1.4.2-gcj-compat.i3860:1.4.2.0-40jpp.115

DependencyRemoved:

antlr.i3860:2.7.6-4jpp.2

bsf.i3860:2.3.0-11jpp.1

bsh.i3860:1.3.0-9jpp.1

eclipse-ecj.i3861:3.2.1-19.el5

gjdoc.i3860:0.7.7-12.el5

jakarta-commons-codec.i3860:1.3-7jpp.2

jakarta-commons-httpclient.i3861:3.0-7jpp.1

jakarta-commons-logging.i3860:1.0.4-6jpp.1

java-1.4.2-gcj-compat-devel.i3860:1.4.2.0-40jpp.115

java-1.4.2-gcj-compat-src.i3860:1.4.2.0-40jpp.115

junit.i3860:3.8.2-3jpp.1

tomcat5-jsp-2.0-api.i3860:5.5.23-0jpp.7.el5_3.2

tomcat5-servlet-2.4-api.i3860:5.5.23-0jpp.7.el5_3.2

xalan-j2.i3860:2.7.0-6jpp.1

xmlrpc.i3860:2.0.1-3jpp.1

Complete!

[[email protected]]#java-version//再次检查JDK版本，卸载成功

-bash:/usr/bin/java:没有那个文件或目录

###################################################JDK安装

安装文件：用的安装包是jdk-6u22-linux-i586.bin，没有使用RedHat平台通用的rpm包。

首先，通过ftp将jdk-6u22-linux-i586.bin上传到/home/software下。

然后，要给jdk-6u11-linux-i586.bin分配权限，这里要给它可执行的权限，输入：chmod+xjdk-6u11-linux-i586.bin，这里参数x即使执行权限。

[[email protected]/]#cdhome/software//进入安装包所在的目录

[[email protected]]#ls

jdk-6u22-linux-i586.bin

[[email protected]]#chmod+xjdk-6u22-linux-i586.bin//赋予可执行的权限

[[email protected]]#./jdk-6u22-linux-i586.bin//开始解包

.........................省略

Creatingjdk1.6.0_22/jre/lib/deploy.jar

Java(TM)SEDevelopmentKit6successfullyinstalled.

ProductRegistrationisFREEandincludesmanybenefits:

*Notificationofnewversions,patches,andupdates

*SpecialoffersonSunproducts,servicesandtraining

*Accesstoearlyreleasesanddocumentation

Productandsystemdatawillbecollected.Ifyourconfiguration

supportsabrowser,theSunProductRegistrationformfor

theJDKwillbepresented.Ifyoudonotregister,noneof

thisinformationwillbesaved.Youmayalsoregisteryour

JDKlaterbyopeningtheregister.htmlfile(locatedin

theJDKinstallationdirectory)inabrowser.

FormoreinformationonwhatdataRegistrationcollectsand

howitismanagedandused,see:

http://java.sun.com/javase/registration/JDKRegistrationPrivacy.html

PressEntertocontinue.....

Done.

[[email protected]]#ls//查看结包后的目录

jdk1.6.0_22jdk-6u22-linux-i586.bin

[[email protected]]#cdjdk1.6.0_22//进入解压包

[[email protected]_22]#ls//查看解压包内的内容

binincludeREADME.htmlregister_ja.htmlTHIRDPARTYLICENSEREADME.txt

COPYRIGHTjreREADME_ja.htmlregister_zh_CN.html

dblibREADME_zh_CN.htmlsample

demomanregister.htmlsrc.zip

[[email protected]]#mvjdk1.6.0_22/usr/local//通常将jdk1.6.0_22放在/usr/local目录下，所以先执行“移动”

[[email protected]]#cd/usr/local//进入/usr/local目录

[[email protected]]#ls//查看目录内容

binetcgamesincludejdk1.6.0_22liblibexecsbinsharesrc

###################################################JDK设置环境变量

设置环境变量有两种方法：

一是通过export设置临时生效，重启后设置会丢失。

二是将设置写入/etc/profile文件中，可以一直生效。所以我们采用此方法。

[[email protected]/]#vi/etc/profile//打开/etc/profile文件

[[email protected]/]#vi/etc/profile

#/etc/profile

#Systemwideenvironmentandstartupprograms,forloginsetup

#Functionsandaliasesgoin/etc/bashrc

pathmunge(){

if!echo$PATH|/bin/egrep-q"(^|:)$1($|:)";then

if["$2"="after"];then

PATH=$PATH:$1

else

PATH=$1:$PATH

fi

fi

}

#kshworkaround

if[-z"$EUID"-a-x/usr/bin/id];then

EUID=`id-u`

UID=`id-ru`

fi

#Pathmanipulation

if["$EUID"="0"];then

pathmunge/sbin

pathmunge/usr/sbin

pathmunge/usr/local/sbin

fi

#Nocorefilesbydefault

ulimit-S-c0>/dev/null2>&1

if[-x/usr/bin/id];then

USER="`id-un`"

LOGNAME=$USER

MAIL="/var/spool/mail/$USER"

fi

HOSTNAME=`/bin/hostname`

HISTSIZE=1000

if[-z"$INPUTRC"-a!-f"$HOME/.inputrc"];then

INPUTRC=/etc/inputrc

fi

#JDK环境变量设置

exportJAVA_HOME=/usr/local/jdk1.6.0_22

exportPATH=$PATH:$JAVA_HOME/bin

exportCLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/rt.jar

pathmunge/usr/local/jdk1.6.0_22/bin:/usr/local/jdk1.6.0_22/jre/bin

exportPATHUSERLOGNAMEMAILHOSTNAMEHISTSIZEINPUTRC

foriin/etc/profile.d/*.sh;do

if[-r"$i"];then

if["$PS1"];then

.$i

else

.$i>/dev/null2>&1

fi

fi

done

unseti

unsetpathmunge

"/etc/profile"58L,1029C

[[email protected]/]#source/etc/profile//让配置生效

[[email protected]/]#java-version//检查JDK版本（新）

javaversion"1.6.0_22"

Java(TM)SERuntimeEnvironment(build1.6.0_22-b04)

JavaHotSpot(TM)ClientVM(build17.1-b03,mixedmode,sharing)