You need to include the newlines in your echo to get the result you want. Cheers
On Sun, 10 Feb 2019, 22:38 ZHANG Cheng <272699...@qq.com wrote: > I can successfully output the index file by doing it step by step: > > > $ gmx make_ndx -f equilibration.gro > $ r 1-442 > $ q > > > But I am not sure how to do it in just one line. > > > I tried these but all could not work > > > $ echo r 1-442 q | gmx make_ndx -f equilibration.gro > $ echo "r 1-442" q | gmx make_ndx -f equilibration.gro > $ echo "r 1-442" "q" | gmx make_ndx -f equilibration.gro > > > Thank you! > -- > Gromacs Users mailing list > > * Please search the archive at > http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before > posting! > > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > > * For (un)subscribe requests visit > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or > send a mail to gmx-users-requ...@gromacs.org. > -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.
