plan9-cat.1 Evidencias%2FBulk_PC-20170427_%2Fjson.txt %7C egrep -Eo %22%5Ba-zA-Z0-9%5D%2B%40%5Ba-zA-Z0-9%5D%2B%5B.%5D%5Ba-zA-Z0-9%5D%22 %7C sort %7C uniq 
catenate files
source manpages: plan9-cat