1.查找java相关得列表
[qyf@localhost ~]$ yum -y list java*
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[qyf@localhost ~]$ yum -y list java*
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Loaded plugins: fastestmirror
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base | 1.1 kB 00:00
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base/primary | 995 kB 00:00
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base 2789/2789
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extras | 2.1 kB 00:00
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extras/primary_db | 164 kB 00:20
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updates | 1.9 kB 00:00
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updates/primary_db | 422 kB 00:01
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Available Packages
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java-1.4.2-gcj-compat.i386 1.4.2.0-40jpp.115 base
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java-1.4.2-gcj-compat-devel.i386 1.4.2.0-40jpp.115 base
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java-1.4.2-gcj-compat-javadoc.i386 1.4.2.0-40jpp.115 base
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java-1.4.2-gcj-compat-src.i386 1.4.2.0-40jpp.115 base
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java-1.6.0-openjdk.i386 1:1.6.0.0-5.1.13.3.el5_10 updates
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java-1.6.0-openjdk-demo.i386 1:1.6.0.0-5.1.13.3.el5_10 updates
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java-1.6.0-openjdk-devel.i386 1:1.6.0.0-5.1.13.3.el5_10 updates
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java-1.6.0-openjdk-javadoc.i386 1:1.6.0.0-5.1.13.3.el5_10 updates
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java-1.6.0-openjdk-src.i386 1:1.6.0.0-5.1.13.3.el5_10 updates
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java-1.7.0-openjdk.i386 1:1.7.0.55-2.4.7.1.el5_10 updates
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java-1.7.0-openjdk-demo.i386 1:1.7.0.55-2.4.7.1.el5_10 updates
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java-1.7.0-openjdk-devel.i386 1:1.7.0.55-2.4.7.1.el5_10 updates
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java-1.7.0-openjdk-javadoc.i386 1:1.7.0.55-2.4.7.1.el5_10 updates
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java-1.7.0-openjdk-src.i386 1:1.7.0.55-2.4.7.1.el5_10 updates
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java_cup.i386 1:0.10-0.k.6jpp.1 base
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java_cup-javadoc.i386 1:0.10-0.k.6jpp.1 base
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java_cup-manual.i386 1:0.10-0.k.6jpp.1 base
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javacc.i386 4.0-3jpp.3 base
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javacc-demo.i386 4.0-3jpp.3 base
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javacc-manual.i386 4.0-3jpp.3 base
2.使用root用户安装
安装时提醒必须使用root用户,sudo都不行。
[qyf@localhost ~]$ yum -y install java-1.6.0-openjdk*
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[qyf@localhost ~]$ yum -y install java-1.6.0-openjdk*
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Loaded plugins: fastestmirror
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Loading mirror speeds from cached hostfile
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* base: mirror.bit.edu.cn
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* extras: mirror.bit.edu.cn
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* updates: centos.ustc.edu.cn
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base | 1.1 kB 00:00
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base/primary | 995 kB 00:07
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base 2789/2789
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extras | 2.1 kB 00:00
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extras/primary_db | 164 kB 00:02
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updates | 1.9 kB 00:00
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updates/primary_db | 422 kB 00:07
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Setting up Install Process
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Resolving Dependencies
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--> Running transaction check
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---> Package java-1.6.0-openjdk.i386 1:1.6.0.0-5.1.13.3.el5_10 set to be updated
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--> Processing Dependency: jpackage-utils >= 1.7.3-1jpp.2 for package: java-1.6.0-openjdk
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--> Processing Dependency: libgif.so.4 for package: java-1.6.0-openjdk
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--> Processing Dependency: tzdata-java for package: java-1.6.0-openjdk
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---> Package java-1.6.0-openjdk-demo.i386 1:1.6.0.0-5.1.13.3.el5_10 set to be updated
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---> Package java-1.6.0-openjdk-devel.i386 1:1.6.0.0-5.1.13.3.el5_10 set to be updated
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---> Package java-1.6.0-openjdk-javadoc.i386 1:1.6.0.0-5.1.13.3.el5_10 set to be updated
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---> Package java-1.6.0-openjdk-src.i386 1:1.6.0.0-5.1.13.3.el5_10 set to be updated
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--> Running transaction check
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---> Package giflib.i386 0:4.1.3-7.3.3.el5 set to be updated
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---> Package jpackage-utils.noarch 0:1.7.3-1jpp.3.el5 set to be updated
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---> Package tzdata-java.i386 0:2014b-1.el5 set to be updated
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--> Finished Dependency Resolution
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Dependencies Resolved
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================================================================================
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Package Arch Version Repository
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Size
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================================================================================
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Installing:
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java-1.6.0-openjdk i386 1:1.6.0.0-5.1.13.3.el5_10 updates 44 M
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java-1.6.0-openjdk-demo i386 1:1.6.0.0-5.1.13.3.el5_10 updates 2.2 M
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java-1.6.0-openjdk-devel i386 1:1.6.0.0-5.1.13.3.el5_10 updates 15 M
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java-1.6.0-openjdk-javadoc i386 1:1.6.0.0-5.1.13.3.el5_10 updates 20 M
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java-1.6.0-openjdk-src i386 1:1.6.0.0-5.1.13.3.el5_10 updates 39 M
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Installing for dependencies:
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giflib i386 4.1.3-7.3.3.el5 base 39 k
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jpackage-utils noarch 1.7.3-1jpp.3.el5 base 60 k
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tzdata-java i386 2014b-1.el5 updates 172 k
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Transaction Summary
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================================================================================
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Install 8 Package(s)
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Upgrade 0 Package(s)
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Total download size: 120 M
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Downloading Packages:
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(1/8): giflib-4.1.3-7.3.3.el5.i386.rpm | 39 kB 00:00
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(2/8): jpackage-utils-1.7.3-1jpp.3.el5.noarch.rpm | 60 kB 00:00
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(3/8): tzdata-java-2014b-1.el5.i386.rpm | 172 kB 00:04
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(4/8): java-1.6.0-openjdk-demo-1.6.0.0-5.1.13.3.el5_10.i386.rpm | 2.2 MB 00:47
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(5/8): java-1.6.0-openjdk-devel-1.6.0.0-5.1.13.3.el5_10.i386.rpm | 15 MB 04:25
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(6/8): java-1.6.0-openjdk-javadoc-1.6.0.0-5.1.13.3.el5_10.i386.rpm (17%) 19% [============ ] 81 kB/s | 3.8 MB 03:19 ETA
最后一行就是在下载jdk了,这里我们安装jdk1.6相关得全部包。
3.确认是否安装成功
[qyf@localhost ~]$ java -version
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[qyf@localhost ~]$ java -version
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java version "1.6.0_30"
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OpenJDK Runtime Environment (IcedTea6 1.13.3) (rhel-5.1.13.3.el5_10-i386)
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OpenJDK Client VM (build 23.25-b01, mixed mode)
正确显示了jdk版本信息就说明安装成功了。
4.默认情况下jdk安装得路径
/usr/lib/jvm
由于我们得机器可能同时安装好几个版本得jdk,所以在
/etc/alternatives目录下会有一个java链接到具体的java命令。而这个/etc/alternatives/java会被/usr/bin/java链接。从而java命令就被设置到了shell环境中。
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