Linux下如何檢視JDK安裝路徑
阿新 • • 發佈：2018-11-30
1：echo $JAVA_HOME
使用$JAVA_HOME的話能定位JDK的安裝路徑的前提是配置了環境變數$JAVA_HOME，否則如下所示，根本定位不到JDK的安裝路徑
[[email protected] ~]# 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)
[[email protected] ~]# echo $JAVA_HOME
2：which java
首先要申明一下which java是定位不到安裝路徑的。which java定位到的是java程式的執行路徑。那麼怎麼定位到java的安裝路徑呢？下面我們來看看例子吧,如下所示：
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[[email protected] ~]
# java -version
java version
"1.7.0_51"
OpenJDK Runtime Environment (rhel-2.4.5.5.el7-x86_64 u51-b31)
OpenJDK 64-Bit Server VM (build 24.51-b03, mixed mode)[[email protected] ~]
# which java
/usr/bin/java
[[email protected] ~]
# ls -lrt /usr/bin/java
lrwxrwxrwx. 1 root root 22 9月 6 22:51
/usr/bin/java
->
/etc/alternatives/java
[[email protected] ~]
# ls -lrt /etc/alternatives/java
lrwxrwxrwx. 1 root root 72 9月 6 22:51
/etc/alternatives/java
->
/usr/lib/jvm/java-1
.7.0-openjdk-1.7.0.51-2.4.5.5.el7.x86_64
/jre/bin/java
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