I have:
MacOS 10.12.2
homebrew 1.1.5
maven 2.0.8
I am trying to install maven 3
before running brew, which mvn reports /usr/local/apache-maven-2.0.8/bin/mvn as we would expect.
after running brew install maven without errors which mvn now reports ../Cellar/maven/3.3.9/bin/mvn and mvn -v still reports 2.0.8.
I'm new to brew. brew doctor does not report any errors. What am I doing wrong?
Because users might install Homebrew in a different path (e.g. ~/.homebrew). In order to support any install path Homebrew uses relative paths when symlinking binaries and other files.
after running brew install maven without errors which mvn now reports ../Cellar/maven/3.3.9/bin/mvn and mvn -v still reports 2.0.8.
This is a different issue; this time due to your shell which checks the full path of an executable only the first time you use it. That is, the first time you typed mvn -v it did the equivalent of which mvn and remembered that path. The second time you typed mvn -v it used that path instead of re-checking it. Type hash -r to reset its memory or start a new shell.
Related
I am currently struggling with an uninstalled maven 3.3.9 on my Ubuntu 16.04, which I uninstalled using the command
sudo apt-get remove --auto-remove maven
I have installed maven 3.6.1 in my local directory,
and command which mvn points exactly to the executable,
but when I'm trying to execute the command mvn --version it shows File not found (at the old /usr/bin path of the uninstalled 3.3.9 version)
bash: /usr/bin/mvn: File not found
So, obviously, there is some symbolic link or something else, but trying to find the broken link with the command
find . -type l | xargs file | grep broken from /
does not come up with any mvn link.
That's rather annoying, can please someone give me an idea how to get rid of the zombie mvn?
Nothing when I type:
$ whereis mvn
but I guess it is somewhere because from Eclipse I can select a pom.xml file and run it as maven build
As pointed out in the comments, Eclipse brings its own bundled Maven. If you want to use Maven on the shell, I suggest you install Homebrew and then install Maven like this:
brew install maven
After that you should be able to use mvn on the command line.
By the way, to find out where mvn is, use:
which mvn
The following command in my terminal is not working (mac user)
mvn --version
I want to find out what version of maven I have. I know that I have maven because I use it all the time but I am wondering my this command is not working.
For mac user follow the below link:
http://coolestguidesontheplanet.com/installing-homebrew-os-x-yosemite-10-10-package-manager-unix-apps/
then after you follow those directions enter
brew install maven
Tried to upgrade maven. Followed this tutorial. Now I am getting this
How does a file exist and not exist?
To upgrade to the latest version (if you have one already installed but need to update the version) do the following:
1. brew update
2. brew unlink maven
3. brew install maven
if you then execute the mvn --version command you should see that your version of maven has been upgraded.
EDIT:
If you have an issue with the update (command 1) that goes along the lines of
error: The following untracked working tree files would be overwritten by merge:
Library/Formula/... try this answer from another issue
You created a symbolic link from your Downloads directory with a directory that may not exist anymore (or with an incorrect path). The directory /usr/bin/mvn obviously exists but the link is incorrect to the target which leads to the "No such file or directory" error when typing mvm --version.
Go through the tutorial again (which seems ok) but if you fail you could always try using Homebrew with the following commands :
brew update
brew install maven
if you installed maven in your mac, i use the next command...
>brew upgrade maven
screenshot
I will be fixed if you run below commands
brew update
brew install maven
Still issue is exist check your M2_HOME path.
It should set to
M2_HOME=/usr/local/bin/mvn
Here is my problem. I am running OS X v10.7 (Lion) and want to set up an old Perl program I have written (was then using a Windows System with ActivePerl and then its ppm).
I read to use CPAN to install Perl modules (I am trying to install the Graph module). Whenever I tried to install it, it failed from a refused connection. Why? So I read that I should run the following to update CPAN and fix any broken links:
cpan> install Bundle:CPAN
cpan> reload cpan
cpan> index cpan
cpan> exit
However, after doing this I am stuck with this every time I try to do a CPAN install or upgrade:
New CPAN.pm version (v1.9800) available.
[Currently running version is v1.9456]
You might want to try
install CPAN
reload cpan
to both upgrade CPAN.pm and run the new version without leaving
the current session.
I was trying to use the default Perl stuff that is included in OS X rather than downloading ActivePerl. How do I fix CPAN and install the Graph Module?
PS: Running install CPAN and reload CPAN didn't do anything, but it generated the same message.
UPDATE
I was able to upgrade to v1.9800 doing a manual install (make, install) through the terminal. But I am still unable to install the Graph Module. Here is what I am getting:
http://cloud.jjnford.com/3D1C1H4217222b1p1O3a
UPDATE - PROBLEM SOLVED
I was finally able to solve the problem. I just moved the /User/jj/.cpan directory to User/jj/.cpan_bak and then reconfigured CPAN and the Graph Module installed with no fuss.
To solve this problem, do a manual upgrade of CPAN (apparently on OS X CPAN has trouble upgrading itself). You can download the source from here. After you have downloaded it uncompress it, create the make file from the Perl script, then run a make test, and finally if all goes well a make install.
$> tar -xvxf CPAN-1.9800
$> cd CPAN-1.9800
$> perl Makefile.PL
$> make
$> make test
$> make install
Now get rid of your old CPAN configuration:
$> mv ~/.cpan ~/.cpan.bak
Now when you run CPAN from the terminal you should be prompted for the configuration again. Once this is complete and CPAN has started you will notice this:
cpan shell -- CPAN exploration and modules installation (v1.9800)
So CPAN is now upgraded and working, and in my case I installed the Graph Module:
$cpan> install Graph
And everything works fine. I hope this helps somebody.
I have a fresh Mac OS X Lion and I updated CPAN without problems.
Installing XCode is not enough. Make, gcc, g++ are not installed by default.
To install them, one has to:
Start XCode, go to XCode->Preferences->Downloads and install component named "Command Line Tools".
I know this was solved, but do consider using "cpanminus" instead next time. It's faster and could save you a lot of hassle. You can either install App:cpanminus using cpanminus (see: App::cpanminus):
curl -L http://cpanmin.us | perl - --sudo App::cpanminus
And then to install any module and its dependencies simply run:
cpanm <module>
Alternatively you could use it directly from the web:
curl -L http://cpanmin.us | perl - --sudo <module>
I use it on my OS X Lion, and it works perfectly :)
Please excuse me for replying to this old post.
I had the same issue as the OP. Once I corrected the command to contain two colons instead of one (i.e. - Bundle::CPAN vs Bundle:CPAN), it worked as expected.