#wthout display
vmd -dispdev text new.psf a.run.dcd b.run.dcd c.run.dcd -eofexit < /home/path/your_script.tcl
vmd -dispdev text -parm7 prmtop.strip -netcdf abc_all.netcdf -eofexot < script.tcl
#with display
vmd -parm7 prmtop.strip -netcdf abc_all.netcdf -e ./script.tcl
#try this also : vanish instatnly
vmd -parm7 prmtop.strip -netcdf abc_all.netcdf < script.tcl
add " sleep 5 " inside the script