perl -ne '/^(\S+)/;if($s{$1}){print$s{$1}unless$S{$s{$1}}++;print}$s{$
+1}=$_' file

[download]

--shmem 

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

In reply to Re: Searching for two lines that begin with the same string by shmem
in thread Searching for two lines that begin with the same string by tgrossner

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