How to check the jdk installation path in Linux: 1. Use the "echo $JAVA_HOME" command to get the jdk path configured by the environment variable "$JAVA_HOME"; 2. Use the "rpm -qa | grep java" command, Check the jdk installation path by getting the path of the installation package.
#The operating environment of this tutorial: linux5.9.8 system, Dell G3 computer.
linux view jdk installation path
Method 1: Useecho $JAVA_HOME
If you use$JAVA_HOME, the prerequisite for locating the JDK installation path is to configure the environment variable $JAVA_HOME. Otherwise, as shown below, the JDK installation path cannot be located at all
[root@localhost ~]# java -version java version "1.7.0_65" OpenJDK Runtime Environment (rhel-2.5.1.2.el6_5-x86_64 u65-b17) OpenJDK 64-Bit Server VM (build 24.65-b04, mixed mode) [root@localhost ~]# echo $JAVA_HOME
Method 2: Userpm -qa | grep java
If the JDK is installed from source, then this method It doesn't work either. In other words,rpm –ql packagenamealso has certain limitations.
[root@localhost ~]# rpm -qa | grep java tzdata-java-2014g-1.el6.noarch java-1.6.0-openjdk-1.6.0.0-11.1.13.4.el6.x86_64 java-1.7.0-openjdk-1.7.0.65-2.5.1.2.el6_5.x86_64 [root@localhost ~]# rpm -ql java-1.7.0-openjdk-1.7.0.65-2.5.1.2.el6_5.x86_64 | more /etc/.java /etc/.java/.systemPrefs /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64 /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jaas-1.7.0.65.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jaas-1.7.0.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jaas.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jce-1.7.0.65.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jce-1.7.0.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jce.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jdbc-stdext-1.7.0.65.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jdbc-stdext-1.7.0.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jdbc-stdext-3.0.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jdbc-stdext.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jndi-1.7.0.65.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jndi-1.7.0.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jndi-cos-1.7.0.65.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jndi-cos-1.7.0.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jndi-cos.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jndi-ldap-1.7.0.65.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jndi-ldap-1.7.0.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jndi-ldap.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jndi-rmi-1.7.0.65.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jndi-rmi-1.7.0.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jndi-rmi.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jndi.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jsse-1.7.0.65.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jsse-1.7.0.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/jsse.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/sasl-1.7.0.65.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/sasl-1.7.0.jar /usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.65.x86_64/sasl.jar /usr/lib/jvm-exports/jre-1.7.0-openjdk.x86_64 /usr/lib/jvm-private/java-1.7.0-openjdk.x86_64 /usr/lib/jvm-private/java-1.7.0-openjdk.x86_64/jce /usr/lib/jvm-private/java-1.7.0-openjdk.x86_64/jce/vanilla /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64/ASSEMBLY_EXCEPTION /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64/LICENSE /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64/THIRD_PARTY_README /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64/jre /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64/jre/bin /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64/jre/bin/java /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64/jre/bin/keytool /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64/jre/bin/orbd /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64/jre/bin/pack200 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64/jre/bin/policytool /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64/jre/bin/rmid /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65.x86_64/jre/bin/rmiregistry --More--
Extended knowledge:
java -version
[root@localhost ~]# java -version java version "1.7.0_65" OpenJDK Runtime Environment (rhel-2.5.1.2.el6_5-x86_64 u65-b17) OpenJDK 64-Bit Server VM (build 24.65-b04, mixed mode)
which java
[root@localhost ~]# which java /usr/bin/java [root@localhost ~]# ls -lrt /usr/bin/java lrwxrwxrwx. 1 root root 22 Aug 17 15:12 /usr/bin/java -> /etc/alternatives/java [root@localhost ~]# ls -lrt /etc/alternatives/java lrwxrwxrwx. 1 root root 46 Aug 17 15:12 /etc/alternatives/java -> /usr/lib/jvm/jre-1.7.0-openjdk.x86_64/bin/java [root@localhost ~]# [root@localhost ~]# cd /usr/lib/jvm [root@localhost jvm]# ls java-1.6.0-openjdk-1.6.0.0.x86_64 java-1.7.0-openjdk-1.7.0.65.x86_64 jre jre-1.6.0 jre-1.6.0-openjdk.x86_64 jre-1.7.0 jre-1.7.0-openjdk.x86_64 jre-openjdk [root@localhost jvm]#
whereis javaThe same is true, it cannot locate the installation path itself. You can use the above example to locate the installation path
Linux Video Tutorial"
The above is the detailed content of How to check jdk installation path in linux. For more information, please follow other related articles on the PHP Chinese website!
![[Introduction to beginners, easy to understand] Learn Linux in one week](https://img.php.cn/upload/course/000/000/068/6242a86a890b1568.png)
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
