Rob Dixon wrote:
obdulio santana wrote:
May be this helps
perl -lne "print if ++$D{$_} == 1" address.txt
You may prefer the cuteness of
perl -lne "print unless $D{$_}++" address.txt
Or the shortness of:
perl -ne'$D{$_}++||print' address.txt
John
--
Perl isn't a toolbox, but a small machine shop where you
can special-order certain sorts of tools at low cost and
in short order. -- Larry Wall
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