[gmx-users] Gromacs help

[Tuhin Samanta]

Dear,
Please tell me how i will use g_select command as i am simulating only
water molecules not any other reference molecule is there in my system but
i want to select a water molecule, and chose all water molecule within 0.4
nm around it, can you please tell me the proper command as i am getting
error with this command-

 g_select -f npt_ir.gro -s npt_ir.tpr - select '"Nearby water" resname SOL
and within 0.4 ' -n indexg1.ndx -on indextrial.ndx
eroor message  is that :

Invalid command line argument:
-
For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors


Tuhin Samanta