Returns the path to Octave home directory, i.e. the
  directory that contains the bin/ sub-directory
  where Octave binaries can be found, e.g., typically
  /usr/ on Linux machines.
Octave.home(..., configure = FALSE, use.system = TRUE)
file.path.octave-config to retrieve Octave home
  directory. This would be done as a last resort, if the
  path could not be determined in any other ways (see
  Details).a character string, or NULL if the path was not
  found.
The path to Octave home directory is determined in the following order:
'octave.home'; 'OCTAVE_HOME'; octave-config, which is itself
  looked up in the system PATH. If set, the global option or environment variable should contain the absolute path to Octave root directory.
## Don't show: 
# roxygen generated flag
options(R_CHECK_RUNNING_EXAMPLES_=TRUE)
## End Don't show
Octave.home()
## [1] "/usr"
  o_config_info,
  octave_config, Octave.config,
  Octave.info, Octave.version