Dear Tsjerk Thanks for your quick reply.
I used awk '!($1%16)' file.xvg. It is very good. Since my xvg file is large. I want to have output in new xvg file (new.xvg) instead of screen. How to do this? -- 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.