From: Henrik Hariman (
Date: Thu Oct 24 2019 - 22:34:12 CDT

Dear all,
Using catdcd (below command) I am trying to concatenate a series of gromacs
gro files to generate a .trr trajectory out of them;
>~ catdcd -o traj.trr -otype trr -gro f1.gro f2.gro f3.gro f4.gro f5.gro
The command runs with no error and it can read the f*.gro files, but no
frame is is being added to the trajectory.
Would you please let me know where I am doing wrong?

Thank you