I always forget about pv, though use status=progess of dd. When I need it in the middle of process, I just `ls /proc/_pid_/fd` and then take that _fd#_ to `cat

I always forget about pv, though use status=progess of dd. When I need it in the middle of process, I just `ls /proc/_pid_/fd` and then take that _fd#_ to `cat /proc/_pid_/fdinfo/_fd#_`