How to configure environment variables in Linux environment

JDK download address:

http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

Configure the software directory in the root directory under the Linux environment

Upload the downloaded jdk to the software folder

(The operating software I use is)

Go to the software directory.

Enter the command: cd /software

Enter the command: ll

You can see our jdk package

Unzip the file

Decompression command tar xzvf jdk-8u111-linux-x64.tar.gz

After decompression, you can delete the compressed package that was previously transferred

Delete the file rm -fjdk-8u111-linux-x64.tar.gz

Configure JDK environment variables

Similar to configuring JDK in Windows, you need to configure the following three environment variables:

vi /etc/profile and then enter the letter a or i to enter the editing state and add the following variables to the file

Enter the command to add environment variables:

export JAVA_HOME=/software/jdk1.8.0_111
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$JAVA_HOME/bin:$PATH

Enter the command to view the environment variables:

echo $CLASSPATH

echo $PATH

Enter the command to view the version of jdk

java -version

Note: Sometimes you need to restart to see these configuration information.

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.