linux用户覆盖全局（自定义）变量环境

[dev_ydzj_1@localhostusr]$cd$HOME

[dev_ydzj_1@localhost~]$pwd

/home/dev_ydzj_1

[dev_ydzj_1@localhost~]$java-version

javaversion"1.6.0_24"

Java(TM)SERuntimeEnvironment(build1.6.0_24-b07)

JavaHotSpot(TM)ServerVM(build19.1-b02,mixedmode)

在公司看到上述结果，认为linux系统全局java环境是1.6，但是看到下面的执行结果我就疑惑了

[dev_ydzj_1@localhost~]$tail-3/etc/profile

exportJAVA_HOME=/opt/jdk/jdk1.5.0_15

exportCLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib

exportPATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH:$HOMR/bin

找人解疑，看到下面结果，顿时有所感悟！

[dev_ydzj_1@localhost~]$less.bash_profile

#.bash_profile

#Getthealiasesandfunctions

if[-f~/.bashrc];then

.~/.bashrc

fi

#Userspecificenvironmentandstartupprograms

exportTOMCAT_HOME=/home/dev_ydzj_1/apache-tomcat-5.5.25

exportCATALINA_HOME=/home/dev_ydzj_1/apache-tomcat-5.5.25

exportJAVA_HOME=/opt/jdk/jdk1.6.0_24

exportCLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib

PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$TOMCAT_HOME/bin:$CATALINA_HOME/bin:$PATH:$HOME/bin

exportPATH

记录，备忘。嘿嘿！