I have a large data file that contains duplicate rows. 'uniq' finds those rows that match character-by-character, but not those who match only on the first three fields (separated by '|'). There are rows with the same location ID, date, and chemical that have different concentrations listed, and I need to cull the duplicated records based on the first three fields after the file's been sorted on those fields.
The uniq man page doesn't show me how to do this; the information may well be there and I'm not seeing it properly. Recommendations appreciated. Rich _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
