How to analysis the MD result?

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1

GROMACS version:2022.2
GROMACS modification: Yes/No
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I did a Protein-ligand system and succeeded. Now I want to analysis the result, just like the frequency of interaction between a certain group of a small molecule and the relevant amino acids in a protein.
Which command should I use? Or any free website?

2

I guess a good start would be to create an index file. gmx make_ndx and gmx select might be of use. Then you can use, e.g., gmx distance and gmx hbond for some analyses.