On 2/4/18 8:50 AM, farial tavakoli wrote:
Dear Justin

Thank you so much for replying
 I dont know exactly how I should use gmx trjcat command to concatenate 2 .trr files (nvt.trr and traj.part0002.trr)
I issued this command to merge them:

gmx trjcat -f nvt.trr -o fixed.trr -cat

but faced to this result:

gmx trjcat -f nvt.trr -o fixed.trr -cat

This accomplishes nothing; nvt.trr and fixed.trr will be identical. The purpose of trjcat is to assemble multiple trajectory files (note in the help information, the -f argument specifies that it takes multiple files). You want:

gmx trjcat -f nvt.trr traj.part0002.trr -o fixed.trr



Justin A. Lemkul, Ph.D.
Assistant Professor
Virginia Tech Department of Biochemistry

303 Engel Hall
340 West Campus Dr.
Blacksburg, VA 24061

jalem...@vt.edu | (540) 231-3129


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