/usr/lib/jvm/java-1.7-openjdk/bin/apt

apt: invalid flag: --help
Usage: apt <apt and javac options> <source files>
where apt options include:
  -classpath <path>          Specify where to find user class files and annotation processor factories
  -cp <path>                 Specify where to find user class files and annotation processor factories
  -d <path>                  Specify where to place processor and javac generated class files
  -s <path>                  Specify where to place processor generated source files
  -source <release>          Provide source compatibility with specified release
  -version                   Version information
  -help                      Print a synopsis of standard options; use javac -help for more options
  -X                         Print a synopsis of nonstandard options
  -J<flag>                   Pass <flag> directly to the runtime system
  -A[key[=value]]            Options to pass to annotation processors
  -nocompile                 Do not compile source files to class files
  -print                     Print out textual representation of specified types
  -factorypath <path>        Specify where to find annotation processor factories
  -factory <class>           Name of AnnotationProcessorFactory to use; bypasses default discovery process
See javac -help for information on javac options.


warning: The apt tool and its associated API are planned to be
removed in the next major JDK release.  These features have been
superseded by javac and the standardized annotation processing API,
javax.annotation.processing and javax.lang.model.  Users are
recommended to migrate to the annotation processing features of
javac; see the javac man page for more information.