plan9-read.1 Evidencias%2FBulk_PC-20170427_%2Furl.txt %7C egrep -Eo %22%28http%7Chttps%7Cwww%29%3A%2F%2F%5Ba-zA-Z0-9.%2F%25%26%3F%3D_-%5D*%22 %7C sort %7C uniq 
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source manpages: plan9-read