title: How to use PipeViewer(pv) on Mac OS with dd
body: <p>I'm trying to copy a .img of Ubuntu 14.04.1 to my bootable usb using the command <code>sudo dd if=~/Documents/targetUbuntu.img of=/dev/rdisk1 bs=1m</code> but it's taking long and I can't see the progress. So i'm trying to use pv using this command <code>sudo dd if=~/Documents/targetUbuntu.img | pv | dd of=/dev/rdisk1 bs=1m</code> but im getting this error: <code>dd: /dev/rdisk1: Permission denied</code>. If I do do ctrl-C in the first scenario where its taking too long it tells me that it copied over X amount of bytes in X secs and that's it. When I try to boot the usb, it says "isolinux.iso is missing or corrupt". So I want to make sure that file is copying over properly and I want to do that by using pv to check the progress, but I keep getting that error. Any solutions?</p>