pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <groupId>codecheck</groupId>
  <artifactId>theapp</artifactId>
  <version>1.0</version>
  <packaging>jar</packaging>

  <name>theapp</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>2.3.2</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
          <encoding>UTF-8</encoding>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>appassembler-maven-plugin</artifactId>
        <version>1.1.1</version>
        <executions>
          <execution>
            <id>pt</id>
            <phase>package</phase>
            <goals><goal>assemble</goal></goals>
            <configuration>
              <assembleDirectory>target</assembleDirectory>
              <programs>
                <program>
                  <mainClass>codecheck.App</mainClass>
                  <name>theapp</name>
                </program>
              </programs>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>exec-maven-plugin</artifactId>
        <version>1.3.2</version>
        <executions>
           <execution>
            <id>script-chmod</id>
            <phase>package</phase>
            <goals>
              <goal>exec</goal>
            </goals>
            <configuration>
              <executable>chmod</executable>
              <arguments>
                <argument>+x</argument>
                <argument>target/bin/theapp</argument>
              </arguments>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>