Installing Liquibase with Maven on Linux/Unix/Mac

To download Maven, navigate to https://maven.apache.org/download.cgi and click on the For Linux/Unix/Mac Binary tar.gz download file to install the latest version of Apache Maven.

Installing

Once you have downloaded the tar.gz file, extract it to a new local directory on your computer (Example: /usr/apps/apache-maven-3.6.2), then add the maven-3.6.2/bin directory to your PATH. To add the directory to your PATH:

1. Open the Terminal or Linux Command Line.
2. Run the following command: export PATH=$PATH:/usr/apps/apache-maven-3.6.2/bin

Note: This command will not permanently update your PATH for the remainder of the session. To permanently update your PATH edit your ~/.profile or ~/.bashrc file and add the export command as shown above, and then run either source ~/.profile or source ~/.bashrc

Verifying

Verification is an essential aspect of the Maven installation process, and there are three things you need to check:

1. The maven-3.6.2/bin folder was correctly added to your PATH.
2. Java is installed on your system.
3. You can run Maven itself.

Verification #1: Check your Path

To verify that you have correctly added the maven-3.6.2/bin folder to your PATHs, type env in your Terminal or Linux command to display all your available PATHs. Verify that the pat you added is shown.

Verification #2: Check for Java Installation

For Maven to run correctly, Java must be installed on your Linux/Unix/Mac machine. To verify that Java is installed on your computer:

1. Open your Terminal or Linux Command.
2. In the Command Prompt window, type: java -version If you see the error -bash: java: command not found, then you need to either install Java, or you need to add the location of the Java executable to your PATH. To install Java on your computer:
3. Navigate to https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html and install the Java JDK.
4. Add the location of the Java file to your PATH environment as a variable.

Verification #3: Run maven

Finally, verify that Maven is working correctly. To run the command:

1. Open your Terminal or Linux Command.
2. In the Command Prompt window, type: mvn –v
3. You should see something like the output below:

Apache Maven 3.6.2 (40f52333136460af0dc0d7232c0dc0bcf0d9e117; 2019-08-27T17:06:16+02:00)
Maven home: /opt/apache-maven-3.6.2
Java version: 1.8.0_45, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.8.5", arch: "x86_64", family: "mac"

Next steps - using Liquibase in a Maven project

Now that you have installed Maven, you can set up a new Maven project and see how to use the Liquibase Maven plugin in that project.