Linux under Configure JDK and Soft link command ln use

Java_home directory for configuring JDK under Linux

1. Create JDK folder, upload JDK, unzip

#创建目录 mkdir /usr/java# decompression unzip Jdk1. 7. 0_45_20150317. Zip

2. Edit the configuration file, configure environment variables

VI /etc/profile

Add the following configuration

Export java_home=/usr/java/jdkexport PATH= $PATH: $JAVA _home/bin: $JAVA _home/jre/binexport CLASSPATH =.: $JAVA _home/lib: $JAVA _home/jre/lib: $CLASSPATH

3, save after exiting, run

Echo $JAVA _home

You can see that the JDK environment variable is not updated, run a command, note that there are spaces

. /etc/profile

Then look at the java_home variable, the configuration is in effect, point to/USR/JAVA/JDK, but the real JDK directory is not this, but/usr/java/jdk1.7.0_45_20150317.

4. Create a soft link to create a more concise, named shortcut to the JDK's real directory.

Ln -s/usr/java/jdk1. 7. 0_45_20150317/usr/java/jdk

Complete. Linux configuration JDK Environment variables are simple, but remember to run. /etc/profile command to make the configuration take effect immediately. You can create soft links to simplify variable links.

Linux under Configure JDK and Soft link command ln use