[macos] Maven not found in Mac OSX mavericks

This solution could seem very long, but it's not. I just included many examples so that everything was clear. It worked for me in Mavericks OS.

Note: I combined and edited some of the answers shown above, added some examples and format and posted the result, so the credit goes mostly to the creators of the original posts.

1. Download Maven from here.

2. Open the Terminal.

3. Extract the file you just downloaded to the location you want, either manually or by typing the following lines in the Terminal (fill the required data):

   mv [Your file name] [Destination location]/ tar -xvf [Your file name]

   For example, if our file is named "apache-maven-3.2.1-bin.tar" (Maven version 3.2.1) and we want to locate it in the "/Applications" directory, then we should type the following lines in Terminal:

   mv apache-maven-3.2.1-bin.tar /Applications/
   tar -xvf apache-maven-3.2.1-bin.tar
   

4. If you don't have any JDK (Java Development Kit) installed on your computer, install one.

5. Type "java -version" in Terminal. You should see something like this:

   java version "1.8.0"
   Java(TM) SE Runtime Environment (build 1.8.0-b132)
   Java HotSpot(TM) 64-Bit Server VM (build 25.0-b70, mixed mode)
   

   Remember your java version (in the example, 1.8.0).

6. Type "cd ~/" to go to your home folder.

7. Type "touch .bash_profile".

8. Type "open -e .bash_profile" to open .bash_profile in TextEdit.

9. Type the following in TextEdit (copy everything and replace the required data):

   export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk[Your Java version].jdk/Contents/Home export M2_HOME=[Your file location]/apache-maven-[Your Maven version]/ export PATH=$PATH:$M2_HOME/bin alias mvn='$M2_HOME/bin/mvn'

   For example, in our case we would replace "[Your Java version]" with "1.8.0" (value got in step 5), "[Your file location]" with "/Applications" (value used as "Destination Location" in step 3) and "[Your Maven version]" with "3.2.1" (Maven version observed in step 3), resulting in the following code:

   export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home
   export M2_HOME=/Applications/apache-maven-3.2.1/
   export PATH=$PATH:$M2_HOME/bin
   alias mvn='$M2_HOME/bin/mvn'
   

10. Save your changes

11. Type "source .bash_profile" to reload .bash_profile and update any functions you add.

12. Type mvn -version. If successful you should see the following:

    Apache Maven [Your Maven version] ([Some weird stuff. Don't worry about this]) Maven home: [Your file location]/apache-maven-[Your Maven version] Java version: [You Java version], vendor: Oracle Corporation Java home: /Library/Java/JavaVirtualMachines/jdk[Your Java version].jdk/Contents/Home/jre [Some other stuff which may vary depending on the configuration and the OS of the computer]

    In our example, the result would be the following:

    Apache Maven 3.2.1 (ea8b2b07643dbb1b84b6d16e1f08391b666bc1e9; 2014-02-14T18:37:52+01:00)
    Maven home: /Applications/apache-maven-3.2.1
    Java version: 1.8.0, vendor: Oracle Corporation
    Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0</b>.jdk/Contents/Home/jre
    Default locale: es_ES, platform encoding: UTF-8
    OS name: "mac os x", version: "10.9.2", arch: "x86_64", family: "mac"