xyz2pdb: a tool to translate configuration from .xyz to .pdb format
using a PDB template
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syntax: xyz2pdb <xyz_file> <reference_pdb_file> [ <replica-index> | "REM" ]

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 the initial lines of each frame in an .xyz file from ORAC contain
 -----1) number of atoms
 -----2) time, co matrix
 if the file was produced from a REM simulation, 
 line 2 will contain the ensemble (replica) index at the end

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To compile, type `make'

To run a simple test, type `make test'

