cd /home/databank/ydn/DRAK2/analysis/check/RMSD-fir CPPTRAJ="/home/dddc/software/miniforge3/envs/ambertools/bin/cpptraj" TOPO="/home/databank/ydn/DRAK2/MD/Re/noMg/system1/parameters/native.prmtop"
rmsd: /home/databank/ydn/DRAK2/MD3/Mg/system2/check/RMSD/ /home/databank/ydn/DRAK2/MD/Re/noMg/check/RMSD/ show sticks, resn MOL select ion_test, inorganic show spheres, ion_test set sphere_scale,