[gmx-users] Using many index file in one command line

Justin Lemkul jalemkul at vt.edu
Tue May 28 04:20:09 CEST 2013

On 5/27/13 10:18 PM, Kieu Thu Nguyen wrote:
> Dear users,
> Is there command for using many different index.ndx files in one command
> line ? I used -n flag many times and gromacs report error.

No Gromacs program accepts multiple index files simultaneously.  You must 
specify whatever groups you need in one index file.  The .ndx format is just 
plain text; you can even just concatenate index files with cat.



Justin A. Lemkul, Ph.D.
Research Scientist
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080


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