cannot get maven to work

tonj · 04-26-2015, 10:47 AM

I'm running centos 6 64bit and trying to get apache-maven-3.3.1 to work. I followed instructions both here:
http://maven.apache.org/guides/getti...e-minutes.html
and here:
http://www.tutorialspoint.com/maven/...ment_setup.htm
but when I do 'mvn --version' I get:

Code:

# mvn --version
Error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher

echo $PATH gives this:

Code:

# echo $PATH
/usr/local/apache-maven/apache-maven-3.3.1/bin/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/usr/local/apache-maven/apache-maven-3.3.1/bin

this looks like a mess.
I've been trawling google for ages and nothing works in solving this error. I read that I have to remove environmental variables but can't find a way to do that. Can anybody help please?

ndc85430 · 04-26-2015, 11:09 AM

First of all, is there any particular reason you're running Maven as root? You'll generally be doing your development, etc. as a regular user, so you usually won't need to run it as root.

OK, first of all, you have two entries for Maven in your PATH. Get rid of that first one, because it has an extra "/bin" in it.

tonj · 04-26-2015, 11:49 AM

thanks but how does one get rid of an unwanted PATH? I have searched on google about this but can't the way it's done.

update: I don't believe this. I logged out of the console, took the dog a walk, got your reply and tried again. Now it says:

Quote:

# mvn --version
Apache Maven 3.3.1 (cab6659f9874fa96462afef40fcf6bc033d58c1c; 2015-03-13T20:10:27+00:00)
Maven home: /usr/local/apache-maven/apache-maven-3.3.1
Java version: 1.7.0_75, vendor: Oracle Corporation
Java home: /usr/java/jdk1.7.0_75/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "2.6.32-042stab093.5", arch: "amd64", family: "unix"

so I guess it's working.

pan64 · 04-26-2015, 12:11 PM

yes, it looks like, the solution was to log out and log on again (the old shell did not recognize the configuration properly). But again, please do not use root if not required.

ndc85430 · 04-26-2015, 12:29 PM

Quote:

Originally Posted by tonj

thanks but how does one get rid of an unwanted PATH? I have searched on google about this but can't the way it's done.

Well, how did you add it in the first place? You probably edited your .bashrc or similar file. You should just be able to remove it from there.