                      :-) GROMACS - gmx mdrun, 2018.3 (-:

                            GROMACS is written by:
     Emile Apol      Rossen Apostolov      Paul Bauer     Herman J.C. Berendsen
    Par Bjelkmar    Aldert van Buuren   Rudi van Drunen     Anton Feenstra  
  Gerrit Groenhof    Aleksei Iupinov   Christoph Junghans   Anca Hamuraru   
 Vincent Hindriksen Dimitrios Karkoulis    Peter Kasson        Jiri Kraus    
  Carsten Kutzner      Per Larsson      Justin A. Lemkul    Viveca Lindahl  
  Magnus Lundborg   Pieter Meulenhoff    Erik Marklund      Teemu Murtola   
    Szilard Pall       Sander Pronk      Roland Schulz     Alexey Shvetsov  
   Michael Shirts     Alfons Sijbers     Peter Tieleman    Teemu Virolainen 
 Christian Wennberg    Maarten Wolf   
                           and the project leaders:
        Mark Abraham, Berk Hess, Erik Lindahl, and David van der Spoel

Copyright (c) 1991-2000, University of Groningen, The Netherlands.
Copyright (c) 2001-2017, The GROMACS development team at
Uppsala University, Stockholm University and
the Royal Institute of Technology, Sweden.
check out http://www.gromacs.org for more information.

GROMACS is free software; you can redistribute it and/or modify it
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of the License, or (at your option) any later version.

GROMACS:      gmx mdrun, version 2018.3
Executable:   /home/santuz/softs/gromacs-2018.3/bin/gmx
Data prefix:  /home/santuz/softs/gromacs-2018.3
Working dir:  /data/santuz/depots/colvars/gromacs/tests/000_tilt_harmonic-fixed
Command line:
  gmx mdrun -deffnm


-------------------------------------------------------
Program:     gmx mdrun, version 2018.3
Source file: src/gromacs/commandline/cmdlineparser.cpp (line 276)
Function:    void gmx::CommandLineParser::parse(int*, char**)

Error in user input:
Invalid command-line options
  In command-line option -deffnm
    Too few (valid) values

For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors
-------------------------------------------------------
