cat.1posix Evidencias%2FBulk_PC-20170427_%2Fjson.txt %7C grep -Eo %22%28http%7Chttps%29%3A%2F%2F%7Cwww%5Ba-zA-Z0-9.%2F%3F%3D_-%5D*%22 %7C sort %7C uniq 
concatenate and print files
source manpages: cat