settings.xml

<settings>
  <profiles>
    <profile>
      <id>sign</id>
      <properties>
        <keystore>./test.keystore</keystore>
        <storepass>hogehoge</storepass>
        <keypass>hogehoge</keypass>
        <alias>test</alias>
      </properties>
    </profile>
  </profiles>
</settings>

sign ./test.keystore testtest testtest test true always /Users/vvakame/work/android-sdk-mac_x86