Visit Our UNIX and Linux User Community


How to Find JRE installed in linux machine..?


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting How to Find JRE installed in linux machine..?
# 1  
Old 10-10-2007
How to Find JRE installed in linux machine..?

Hi all,

Im new to linux... Im in need to write a shell script to check wthr JRE in linux machine... Wtz de best way to find thru BASH?? Plz help me out to solve this issue...

Thanks
# 2  
Old 10-10-2007
By JRE, do you mean a basic java install? That can be checked by running 'which java'. If it is in the path, it will show up. Other ways include running a find on / and looking for the file with your name. That will be slow, though.
# 3  
Old 10-10-2007
Unlike Windows, there is no standard way to find out if java is installed on your machine unless ofcourse /usr/bin/java points to GNU java or the SUN java.

You can, at best, look into the environment variables LD_LIBRARY_PATH and PATH to see whether you have a JAVA related path in those env variables.
# 4  
Old 01-31-2008
Unfortunately a solution like "which java" doesn't always work. For instance, I need to find the JRE location not for the binary "java", but for the library libjvm.so, because I want to launch a JVM from C native code.
The library path is something like this: "<JAVA_HOME>/jre/lib/i386/client/libjvm.so, and because of all symbolic links, if I get a path like /usr/bin/java using "which", it doesn't help me much.

Previous Thread | Next Thread
Test Your Knowledge in Computers #779
Difficulty: Medium
Spectrum analysis is also referred to as time domain analysis or time density estimation.
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

How to find whether Solaris installed on physical machine or on a VMware/KVM?

Hi All, . I am trying to find whether Solaris 11 installed on physical server or on VMware/KVM. I tried uname -a but it's giving only whether i installed on X86 or sparc machine. I tried prtdiag command but it's giving below information. command : prtdiag -v |grep "System... (2 Replies)
Discussion started by: sravani25
2 Replies

2. UNIX for Beginners Questions & Answers

Bash find version of an installed application but if none is found set variable to App Not Installed

Hello Forum, I'm issuing a one line bash command to look for the version of an installed application and saving the result to a variable like so: APP=application --version But if the application is not installed I want to return to my variable that the Application is not installed. So I'm... (2 Replies)
Discussion started by: greavette
2 Replies

3. Red Hat

Installing Oracle jre 8 on Linux

Hi, I am a common user on a linux cluster that has openJDK installed. For a particular software, the vendor asks for Oracle version of java installed. How can I install the oracle version from my home space where I don't need admin privileges to install? thanks! (2 Replies)
Discussion started by: pc2001
2 Replies

4. Shell Programming and Scripting

How to Find List of MQ and Websphere certificates that are installed on Linux and UNIX servers?

Dear All, I am planning to find the list of certificates(WEBshpere/MQ) on a servers. My certificates are either stored in (.jks) / (.pem)/ (.cer) . But some of the certificates are stored without these file formats. I tried using find command but unless I give the file name its difficult for... (4 Replies)
Discussion started by: sidh_arth85
4 Replies

5. Red Hat

Finding installed packages on Linux machine

Hi, i am trying to grab all the installed packages on linux machine,and only want to grab "Name" "Version" "Release" "Vendor" information i am using below command to do so : rpm -qa --info | grep -e 'Name' -e 'Version' -e 'Release' -e 'Vendor' the output contains lot other info... (3 Replies)
Discussion started by: omkar.jadhav
3 Replies

6. Ubuntu

What time did Ubuntu installed on machine?

How can I learn what time OS installed time and release information. (4 Replies)
Discussion started by: getrue
4 Replies

7. Red Hat

How do I network a Suse installed machine with other computers, specifically Red hat Linux?

How do I network a Suse installed machine with other computers, specifically Red hat Linux? This is for a school project, and I can't find any pages that tell how to network a Suse to other computers except how to use a printer. (1 Reply)
Discussion started by: Anna Hussie
1 Replies

8. UNIX for Dummies Questions & Answers

Need to find the OS JRE as well as User installed JRE on my UNIX box!

Hi, I want to determine whether my java application is pointing to the OS version of Java or the User installed Java version on my Unix box. I am aware of the "java -version" command, however I am unsure if the version returned is the OS one or the user one. Please help. Ali. (5 Replies)
Discussion started by: ali40
5 Replies

9. Linux

Launching X apps from a machine without X installed

Hi. Here's my setup: a workstation with an X server a CentOS server with no X server installed (development, security is not a concern) a GUI application installed on the server When I ssh to that machine, I get: ssh -Xl root 192.168.x.x Warning: untrusted X11 forwarding setup... (4 Replies)
Discussion started by: flj
4 Replies

10. UNIX for Advanced & Expert Users

command to find when Linux OS is installed?

hey , Anyone knows command to find when Linux OS is installed? Date and time? (2 Replies)
Discussion started by: crackthehit007
2 Replies

Featured Tech Videos