Rodolfo Medina wrote: > Hi. > > Does it exist a linux command (or a sequence of commands) > that looks into a file > and delete one line if there are two equal? > > Thanks, > Rodolfo If you don't mind having your original file sorted, then cat input_file | sort | uniq > result_file would give you what you want (in result_file).
then you could add && rm -f input_file && mv result_file input_file to make the switch as in cat input_file | sort | uniq > result_file && rm -f input_file && mv result_file input_file (the rm might be unnecessary) -- /Björn ------------------------------------------------------------------- http://lundin.homelinux.net Registered Linux User No. 267342 <http://counter.li.org>
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