LinuxQuestions.org - How to find OpenJDK installation directory ?

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How to find OpenJDK installation directory ?

I'm using AWS Amazon EC2 linux.

Problem : How to find OpenJDK installation directory ?

Background:

when I do java -version ... it shows java 1.7 installed.

I want to find where this java installed.

I need this because I'd like to set JAVA_HOME environment variable.

JAVA_HOME = <installation directory >

Could you please help to find OpenJDK installation directory ?

Code:

 % which java

/usr/bin/java

 % readlink -f /usr/bin/java

/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java

Quote:

Originally Posted by Volcano (Post 5852350)

I'm using AWS Amazon EC2 linux.

Problem : How to find OpenJDK installation directory ?

Background:

when I do java -version ... it shows java 1.7 installed.
I want to find where this java installed.
I need this because I'd like to set JAVA_HOME environment variable.
JAVA_HOME = <installation directory >
Could you please help to find OpenJDK installation directory ?

Given that AWS Amazon EC2 Linux seems to use yum, it would therefore use RPM software packages, so there's at least a couple of ways you can find out. Note: This will only be true if you have installed java via software packages - which you should be doing.

1. Use the repoquery command to do it;

First find out what java packages you have installed:

Code:

yum info java*

Then

Code:

repoquery --list <name of package>

or

2. Use the rpm command instead;

Code:

rpm -ql <name of package>

Look for lines that have "bin" in them, that's probably the folder path you are looking for.

See this for more information.