We've got a developer here who needs to use both java and openjdk. I was giving her sudo for alternatives, but my manager would prefer that I look into environment-modules. I've installed it, and I see it comes with configurations for cvs and info... but nothing for java, and the man pages doesn't seem to offer info on creating one.
Does anyone have a pointer to a howto, or maybe even a sample one?
Thanks in advance.
mark
m.roth@5-cent.us wrote:
We've got a developer here who needs to use both java and openjdk. I was giving her sudo for alternatives, but my manager would prefer that I look into environment-modules. I've installed it, and I see it comes with configurations for cvs and info... but nothing for java, and the man pages doesn't seem to offer info on creating one.
Does anyone have a pointer to a howto, or maybe even a sample one?
install openjdk uia standard centos 5.x rpms, install Sun Java to /usr/java/jdk-whatever via the Sun tarball.
if you put /usr/java/jdk-whatever/bin first in the path, you'll be using the Sun java. if you take it out of the path, you will be using the default distribution openjdk.
On som eof our development systems we have 3-4 different versions of Sun java we manage this way.
m.roth@5-cent.us wrote:
We've got a developer here who needs to use both java and openjdk. I was giving her sudo for alternatives, but my manager would prefer that I look into environment-modules. I've installed it, and I see it comes with configurations for cvs and info... but nothing for java, and the man pages doesn't seem to offer info on creating one.
Does anyone have a pointer to a howto, or maybe even a sample one?
install openjdk uia standard centos 5.x rpms, install Sun Java to /usr/java/jdk-whatever via the Sun tarball.
Already did that (btw, Sun doesn't give you a tarball, they give you a self-extracting .bin).
if you put /usr/java/jdk-whatever/bin first in the path, you'll be using the Sun java. if you take it out of the path, you will be using the default distribution openjdk.
I'm trying to provide a simple method for switching between the two, and I don't have any guarantee that someone *other* than this developer, who seems knowledgeable, will have to do the same thing.
I reiterate: does anyone have any examples for a modulefile for java?
mark
m.roth@5-cent.us wrote:
if you put /usr/java/jdk-whatever/bin first in the path, you'll be using the Sun java. if you take it out of the path, you will be using the default distribution openjdk.
I'm trying to provide a simple method for switching between the two, and I don't have any guarantee that someone *other* than this developer, who seems knowledgeable, will have to do the same thing.
I reiterate: does anyone have any examples for a modulefile for java?
lets assume that at profile time, the sun java is -not- in the path, and the usual /usr/bni stuff is. in pseudocode as I'm a little too fried/tired to work out the real code and I haven't been coding sh/bash scripts in a few months so it all blurs together... put this as /usr/local/bin/jset or something ....
export PATH,BASEPATH if not exists $BASEPATH then BASEPATH=$PATH switch $1: case "openjdk": PATH=$BASEPATH break; case "sun": PATH=/path/to/sun/jdk/bin:$BASEPATH break; case "somethign else": PATH=/path/to/something/else:$BASEPATH break; default: echo "Usage: $0 {sun|openjdk|somethingelse}" break endswitch;
this is the old school brute force method, doesn't rely on any external magic other than a sane initial PATH
m.roth@5-cent.us wrote:
m.roth@5-cent.us wrote:
We've got a developer here who needs to use both java and openjdk. I was giving her sudo for alternatives, but my manager would prefer that I look into environment-modules. I've installed it, and I see it comes with configurations for cvs and info... but nothing for java, and the man pages doesn't seem to offer info on creating one.
Does anyone have a pointer to a howto, or maybe even a sample one?
install openjdk uia standard centos 5.x rpms, install Sun Java to /usr/java/jdk-whatever via the Sun tarball.
Already did that (btw, Sun doesn't give you a tarball, they give you a self-extracting .bin).
if you put /usr/java/jdk-whatever/bin first in the path, you'll be using the Sun java. if you take it out of the path, you will be using the default distribution openjdk.
I'm trying to provide a simple method for switching between the two, and I don't have any guarantee that someone *other* than this developer, who seems knowledgeable, will have to do the same thing.
I reiterate: does anyone have any examples for a modulefile for java?
You don't need to switch. You can have as many java versions as you want installed. Just export JAVA_HOME pointing to the one you want and either put the location of the binary you want first in PATH or give the full path in the command to start up. Anyone who works with java will already know this. It is rpm that has a problem dealing with multiple versions of things running concurrently.
I think you should give the user a path list of javas you've installed. More step on, a script with a "sun-java" or "openjdk" as input for switching the java type would be better.
On Sat, Dec 26, 2009 at 12:41 AM, Les Mikesell lesmikesell@gmail.comwrote:
m.roth@5-cent.us wrote:
m.roth@5-cent.us wrote:
We've got a developer here who needs to use both java and openjdk. I
was
giving her sudo for alternatives, but my manager would prefer that I look into environment-modules. I've installed it, and I see it comes
with
configurations for cvs and info... but nothing for java, and the man pages doesn't seem to offer info on creating one.
Does anyone have a pointer to a howto, or maybe even a sample one?
install openjdk uia standard centos 5.x rpms, install Sun Java to /usr/java/jdk-whatever via the Sun tarball.
Already did that (btw, Sun doesn't give you a tarball, they give you a self-extracting .bin).
if you put /usr/java/jdk-whatever/bin first in the path, you'll be using the Sun java. if you take it out of the path, you will be using the default distribution openjdk.
I'm trying to provide a simple method for switching between the two, and
I
don't have any guarantee that someone *other* than this developer, who seems knowledgeable, will have to do the same thing.
I reiterate: does anyone have any examples for a modulefile for java?
You don't need to switch. You can have as many java versions as you want installed. Just export JAVA_HOME pointing to the one you want and either put the location of the binary you want first in PATH or give the full path in the command to start up. Anyone who works with java will already know this. It is rpm that has a problem dealing with multiple versions of things running concurrently.
-- Les Mikesell lesmikesell@gmail.com
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
xiaoyunpeng wrote:
I think you should give the user a path list of javas you've installed. More step on, a script with a "sun-java" or "openjdk" as input for switching the java type would be better.
Ok, so I guess no one's ever used environment-modules. Thanks anyway.
mark
On Sat, Dec 26, 2009 at 12:41 AM, Les Mikesell lesmikesell@gmail.comwrote:
m.roth@5-cent.us wrote:
m.roth@5-cent.us wrote:
We've got a developer here who needs to use both java and openjdk. I
was
giving her sudo for alternatives, but my manager would prefer that I look into environment-modules. I've installed it, and I see it comes
with
configurations for cvs and info... but nothing for java, and the man pages doesn't seem to offer info on creating one.
Does anyone have a pointer to a howto, or maybe even a sample one?
install openjdk uia standard centos 5.x rpms, install Sun Java to /usr/java/jdk-whatever via the Sun tarball.
Already did that (btw, Sun doesn't give you a tarball, they give you a self-extracting .bin).
if you put /usr/java/jdk-whatever/bin first in the path, you'll be using the Sun java. if you take it out of the path, you will be using the default distribution openjdk.
I'm trying to provide a simple method for switching between the two, and
I
don't have any guarantee that someone *other* than this developer, who seems knowledgeable, will have to do the same thing.
I reiterate: does anyone have any examples for a modulefile for java?
You don't need to switch. You can have as many java versions as you want installed. Just export JAVA_HOME pointing to the one you want and either put the location of the binary you want first in PATH or give the full path in the command to start up. Anyone who works with java will already know this. It is rpm that has a problem dealing with multiple versions of things running concurrently.
-- Les Mikesell lesmikesell@gmail.com
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
John R Pierce wrote:
mark wrote:
Ok, so I guess no one's ever used environment-modules. Thanks anyway.
ugh, its a big rats-nest of TCL that does a complicated version of what that shell script I pasted did, eg it dinks with the path.
TCL is, imho, the worst scripting language ever.
ROTFLMAO! A friend on another mailing list is enamored of it, to the point of having one or two published books on tcl.
mark
On 26/12/2009 03:21, mark wrote:
xiaoyunpeng wrote:
I think you should give the user a path list of javas you've installed. More step on, a script with a "sun-java" or "openjdk" as input for switching the java type would be better.
Ok, so I guess no one's ever used environment-modules. Thanks anyway.
mark
Hi
I used environment-modules a few years a go with OSCAR[1], and I remember to simply coping and editing files to create a intel-mpi, intel-cc, etc, based on modules provided by OSCAR.
The document "Drag Your Design Environment Kicking and Screaming into the 90's With Modules!" in project page[2] seems to be pretty complete.
In fact I'm considering using environment-modules as an alternative to put a lot of configuration in .cshrc.
Regards
mg.
[1] http://svn.oscar.openclustergroup.org/trac/oscar [2] http://modules.sourceforge.net/
Marcelo M. Garcia wrote:
On 26/12/2009 03:21, mark wrote:
<snip>
I used environment-modules a few years a go with OSCAR[1], and I remember to simply coping and editing files to create a intel-mpi, intel-cc, etc, based on modules provided by OSCAR.
The document "Drag Your Design Environment Kicking and Screaming into the 90's With Modules!" in project page[2] seems to be pretty complete.
But... but that's *so* last century! <g>
In fact I'm considering using environment-modules as an alternative to put a lot of configuration in .cshrc.
I'll check it out tomorrow and let y'all know how it goes. Thanks!
mark
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John R Pierce -
Les Mikesell -
m.roth＠5-cent.us -
Marcelo M. Garcia -
mark
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xiaoyunpeng