Still I like the article. I just learned about useless use of cat the hard way. The biggest way I learned was cat /dev/zero | pv > /dev/null pv > /dev

Still I like the article. I just learned about useless use of cat the hard way. The biggest way I learned was cat /dev/zero | pv > /dev/null pv > /dev/null < /dev/zero The second one is much faster.