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

--
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Justin A. Lemkul, Ph.D.
Research Scientist
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

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