(self)
Udocker installation instructions are available at:

          https://github.com/indigo-dc/udocker/tree/master/doc
          https://github.com/indigo-dc/udocker/tree/devel/doc

        Udocker requires additional tools to run. These are available
        in the udocker tarball. The tarballs are available at several
        locations. By default udocker will install from the locations
        defined in Config.tarball.

        To install from files or other URLs use these instructions:

        1) set UDOCKER_TARBALL to a remote URL or local filename:

          $ export UDOCKER_TARBALL=http://host/path
          or
          $ export UDOCKER_TARBALL=/tmp/filename

        2) run udocker with the install command or optionally using
           the option --force to overwrite the local installation:

          ./udocker install
          or
          ./udocker install --force

        3) once installed the binaries and containers will be placed
           by default under $HOME/.udocker
Udocker installation instructions are available at:
Udocker installation instructions are available at :
def _instructions(self):
        """
        Udocker installation instructions are available at:

          https://github.com/indigo-dc/udocker/tree/master/doc
          https://github.com/indigo-dc/udocker/tree/devel/doc

        Udocker requires additional tools to run. These are available
        in the udocker tarball. The tarballs are available at several
        locations. By default udocker will install from the locations
        defined in Config.tarball.

        To install from files or other URLs use these instructions:

        1) set UDOCKER_TARBALL to a remote URL or local filename:

          $ export UDOCKER_TARBALL=http://host/path
          or
          $ export UDOCKER_TARBALL=/tmp/filename

        2) run udocker with the install command or optionally using
           the option --force to overwrite the local installation:

          ./udocker install
          or
          ./udocker install --force

        3) once installed the binaries and containers will be placed
           by default under $HOME/.udocker

        """
        Msg().out(self._instructions.__doc__, l=Msg.ERR)
        Msg().out("udocker command line interface version:", __version__,
                  "\nrequires udockertools tarball release :",
                  self._tarball_release, l=Msg.ERR)
def _instructions ( self ) : Msg ( ) . out ( self . _instructions . __doc__ , l = Msg . ERR ) Msg ( ) . out ( "udocker command line interface version:" , __version__ , "\nrequires udockertools tarball release :" , self . _tarball_release , l = Msg . ERR )