General :: How To Set JAVA_HOME Properly
Jan 10, 2009
I have problems with setting my JAVA_HOME variable. I am using Slackware 12.0, bash shell. I have set JAVA_HOME in my /etc/profile, like this:
But when I login in with my user name and type env on the command line, I get for JAVA_HOME the following:
Also, in my /etc/profile I have put the path to my java in the PATH variable, like this:
And when I type env when I login, then the PATH variable contains correctly the path to the jdk (as I have put it into /etc/profile).
I expect that after I have set everything as I want in /etc/profile, and restart the computer then what I have set will be relevant and when I login and type env, I will get values to the variables equal to those I have set in /etc/profile. Why it does not happen?
I have particularly a problem with a Java application, which I want to run. When I type ant, I get: error: JAVA_HOME is not defined correctly.
We cannot execute /usr/lib/java/bin/java.
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Feb 13, 2011
I have installed jdk1.60_23 i have created a directory named java in root's Home, jdk has installed in jdk1.60_23 directory in java how to set path to compile or run the java file ?
I did like this : export JAVA_HOME=/usr/bin/java/jdk1.60_23/bin export PATH=$JAVA_HOME:/usr/bin/java/jdk1.60_23/bin
How check the path has properly set or not ? how and where create source file of java ? how to compile and run the java source file ?
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Jul 28, 2010
Tomcat installation requires JAVA_HOME to be defined. In Windows it is straight forward. But in Linux binaries are in one folder and libraries are in other folder.
Is there a way to find out where exactly is JAVA_HOME?
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May 13, 2010
I tried to install the nutchwax and hadoop as a prequisite for the wera.
Problem:
localhost:
Error: JAVA_HOME is not set.
source code:
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Sep 4, 2009
I was wondering why
Code:
Is echoing NO even though
Code:
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Feb 9, 2010
Where to write JAVA_HOME? In .bashrc or in .bash_profile? What's the difference?
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Apr 15, 2009
I have some Flex and Java files which can be compiled with JDK1.5. My server was already loaded with 1.4 (at path /usr/bin/java) and our sys admin(I dont know why) copied another JDK, JDK 1.5 at path /usr/java/jdk1.5.0_16/. It seems very easy to use this java. Just set the path in .bash_profile. I did it and now if I run which java I still see the path for java 1.4 not java 1.5. Am I doing something wrong? Following is actual entry from bash_profile
Code:
PATH=$PATH:$HOME/bin
PATH=/usr/java/jdk1.5.0_16/bin:$PATH
JAVA_HOME=/usr/java/jdk1.5.0_16/
export PATH JAVA_HOME
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Dec 30, 2009
I installed "jdk1.6.0.bin" and "jre1.6.0.bin" successfully. But I don't know where they are installed. I can't find anywhere. What is the default path they are installed.I want to set JAVA_HOME.
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May 24, 2010
You can install Java either using "Synaptic Package Manager" or using "apt-get install java-6-openjdk" command.Java will be installed to the location "/usr/lib/jvm/java-6-openjdk"Now open a terminal and type "sudo gedit /etc/bash.bashrc ".Append the following lines to the opened "bash.bashrc" file
"export JAVA_HOME=/usr/lib/jvm/java-6-openjdk/"
"export PATH=$PATH:$JAVA_HOME/bin"
Save & close the "bash.bashrc" file
[code]....
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Apr 29, 2010
I downloaded grails-1.2.2.zip in root then did following in .bashrc
Code:
export GRAILS_HOME=/root/grails
export JAVA_HOME=/root/jdk1.6.0_20/bin
rebooted the system.
Code:
[Code]...
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Aug 1, 2010
My OS Ubuntu 9.04
I installed java via
Code:
Code:
Code:
Now logged out and logged in again in my system checked
Code:
and
Code:
After which I type on command prompt
Code: ant and get the following error
Code:
Error: JAVA_HOME is not defined correctly. We cannot execute /usr/lib/jvm/java-6-sun/bin/bin/java
both the file ant.sh and jdk.sh are executable.
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Aug 1, 2010
My OS Ubuntu 9.04I installed java via
Code:
apt-get install sun-java6-jre
also I downloaded ant-1.8.1 binary
[code]....
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Jan 10, 2009
I have problems with setting my JAVA_HOME variable. I am using Slackware 12.0, bash shell. This is a question for the 'Linux Newbie' forum (not slackware-specific).
I have set JAVA_HOME in my /etc/profile, like this:
But when I login in with my user name and type env on the command line, I get for JAVA_HOME the following:
Also, in my /etc/profile I have put the path to my java in the PATH variable, like this:
And when I type env when I login, then the PATH variable contains correctly the path to the jdk (as I have put it into /etc/profile).
I expect that after I have set everything as I want in /etc/profile, and restart the computer then what I have set will be relevant and when I login and type env, I will get values to the variables equal to those I have set in /etc/profile. Why it does not happen?
I have particularly a problem with a Java application, which I want to run. When I type ant, I get:
error: JAVA_HOME is not defined correctly. We cannot execute /usr/lib/java/bin/java.
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Nov 6, 2009
I've managed to create a working RPM that does a bit of system configuration despite having little working knowledge of linux before starting. My RPM appeared to be working for awhile now but as a final test I installed it on a completely fresh install of RedHat enterprise edition 5.2 (after installing prereq rpms). It seems I'm running into a problem that the IMQ program(ie java message queues) will not boot correctly when I do this because it doesn�t know where to find the JRE.
I want to make sure that when my rpm is run the program actually works afterwards, and it won't work without IMQ. I was thinking I would have the RPM modify the IMQ configuration file to provide a -javahome argument when it boots up. I don't think I can set the configuration file to say '-javahome $JAVA_HOME' because the JAVA_HOME environmental variable won't be set until later in the boot up process after IMQ has attempted, and failed, to boot.
so I had thought the rpm could set whatever the value of JAVA_HOME is at the time the rpm is installed as the home for IMQ. So my questions are...
1) how can I require that JAVA_HOME is set prior to running my RPM, and have the RPM not install if JAVA_HOME isn't set
2) is there a good way to have rpm be able to undo the change I made to the configuration file if it is erased? Should I save a version of the old configuration file before I make the changes somewhere to be used?
3) is this the best way to do things, or is there a simpler method?
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Aug 1, 2010
OS Ubuntu 9.04
I have in /etc/profile.d/jdk.sh
Code:
But when I am typing
Code:
which java I see
Code:
Which is not set in PATH.
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Jul 3, 2010
How to:
1. check JAVA version,
2. set up the JAVA_HOME and
3. CLASSPATH variables
I had installed
1. NetbeansIDE 6.7.1 from Software Center
2. MySQL from command sudo apt-get install mysql-server
3. libmysql-java from synaptic package manager
OS Information
1. Partition 1, 3.0 GB Swap Space, /dev/sda1
2. Partition 2, 6.0 GB Filesystem, /dev/sda2 mount at /, Bootable
3. Partition 3, Ext4, /dev/sda3 mount at /home
4. Partition 4, /dev/sda4, Extended (Drive A, Drive B and Drive C)
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May 3, 2011
I installed openjdk version of Java using yum what is the openjdk Home directory?
Is there a command to find it?
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Oct 22, 2010
/usr/lib/jvm/java-6-sun-1.6.0.20/bin
Code:
Have the default entries no changes with them.
Code:
Code:
When I run mvn get error
Code:
Error: JAVA_HOME is not defined correctly.
We cannot execute /usr/lib/jvm/java-6-sun-1.6.0.20/bin/bin/java I am not having any clue as what is this error? As to me JAVA_HOME seems to be defined.
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Aug 21, 2010
I've been following the instructions to install Resin, and all seems to go well until I try to run the /bin/httpd.sh file. It simple says:
Code:
exec: 40: -jar: not found
I suspected this was something to do with my JAVA_HOME variable not being set, so I looked up how to do this and added it to my /etc/bash.bashrc file. Saying "echo $JAVA_HOME" does indeed return the correct path so I don't think this is the problem.
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Jul 28, 2010
I am a newbie to Linux. I tried setting environment variable using export JAVA_HOME=/usr/java/jdk1.6 but that was not permanent (i.e is was there for that terminal session). I want to know how can i set environment variable permanently in Fedora 13 just like we do in windows.After google search, some user suggested to edit bashrc and profile file for setting environment variables but above file contains some shell programs.
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Mar 29, 2011
How can I set up multipath to two devices properly? I'm sure that I need to do something more then just: /etc/init.d/multipathd start
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Aug 1, 2010
I've noticed that, I can not copy a file trough scp .here is an example:
[root@Radius ~]# scp 123.txt /etc/logrotate.d/radiusd.log "nasser@192.168.8.46:/tmp"
nasser@192.168.8.46's password:
[root@Radius ~]#
[code]....
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Aug 11, 2010
(Using Archlinux) I downloaded Ruby 1.8.7-174 a while ago and installed it via the tarball (not pacman). I was trying to update to 1.8.7-299, but I can't get it to work. Per the readme, I do the following steps, all of which complete without error:
./configure
make
make install
After install finishes however, I still have -174 installed instead of -299.
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Apr 21, 2011
there are different methods for securing based on home versus professional computers. My questions generally pertains to securing home desktops, but professional protection is definitely welcome :) Knowledge is power. Ever since moving to the wonderful world of Linux a couple years ago, I never even really thought about security. Seeing as most low-life scum make viruses for Windows machines seeing as they're more abundant.But how do I know if I'm safe/secure from anyone who want's to get at me or my stuff. I know that anyone who is determined enough to get in will, there's no question about that. But what steps can I take to ensure I'm protected from things like rogue root shells and automatic attacks? Also, is there a sort of built-in firewall/antivirus in more Linux distros?
I know this question is quite broad seeing as there are tons of ways someone could compromise your system, but maybe you could share what you did to make sure you were safe.I decided to not allow root login via ssh and to change the port is listens on to something random. Hopefully this a step in the right direction. Currently looking at iptables and shutting down services.
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Aug 23, 2011
I'm trying to use zenity and at to make a little reminder script. The problem is that while zenity --info works fine from bash (or sh), running echo "zenity --info" | at now + 1 min does nothing. The job shows up in my atq and then runs, but no zenity pop-up. What's going on?
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Jan 18, 2010
I am currently trying to make a front-end (client) for xmms2. However, I have run into a road block. I need to get the current number of seconds of the current playing song, so one would think to use:
Code:
xmms2 current "${playtime}"
However, all this does is return a blank line. Infact, if I try to do any "formatting" for
[code]...
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Aug 23, 2010
I'm using Gnome 2.30.2 with Ubuntu 10.4 would like to shut down X Windows properly. Using sudo init 3 from console 1 or a terminal on the Gnome desktop results nothing. There are a bunch of ways of doing accomplishing this that I've seen, but the most recommended methods each cause the same errors. The methods that I've used are sudo service gdm stop, sudo stop gdm && sudo pkill X, and sudo /etc/init.d/gdm stop. After these commands are run I receive the following message: gdm stop/waiting.
Then I switch to console 7 & notice that the screen is frozen & has the following information:
There is a blinking cursor below this message & the terminal does not respond to any command including Ctrl z.
These are the same messages that are normally quickly displayed when linux normally boots.
I disabled the battery power option in & removed other unnecessary startup processes from System, Preferences, Startup Applications. I've tried running the gdm stop commands from terminals 1 & 2 as well as consoles in X Windows & it produces the same results. For some reason though, the gdm commands do work when I used the restart option.
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Feb 25, 2011
I've tried setting up BIND from a fresh install. I've followed a few tutorials (all seem to follow a similar routine), but it doesn't appear to work properly.
This is what happens when I query my domain: [URL]
This is my named.conf file:
Code:
//
// named.conf for Red Hat caching-nameserver
//
options {
directory "/var/named";
[Code].....
I've compared both files to examples and they don't appear to be any different - I'm at a loss as to what is wrong or where I should start to troubleshoot it.
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Feb 27, 2010
I'm trying to run 9.10 from my flash drive, but it won't load properly. I end up with repeating messages of "end_request: I/O error, dev fd0, sector 0", and "Buffer I/O error on device fd0, logical block 0" for a bit, then it goes away, and then repeats "This is normally a bug some applications using the D-Bus library. process normally arguments to dbus_pending_call_set_notify() were incorrect, assertion "pending != NULL" failed in file dbus-pending call .c line 596." really fast, and keeps on repeating until I manually shut my laptop off.
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May 16, 2010
I have created a Virtual Machine with following partitions
OS: Fedora 11
Code:
Device boot start stop blocks id system
/dev/sda1 * 1 13 102400 3 Linux
/dev/sda2 13 587 4608000 8e Linux-LVM
Then I added One more Volume group with ext3 file system
Code:
Device boot start stop blocks id system
/dev/sda1 * 1 13 102400 3 Linux
/dev/sda2 13 587 4608000 8e Linux-LVM
[code]....
After mounting I am not able to access only lock and lost+found file under /var
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