On 12/21/2012 12:12 AM, Daniel Santos wrote: > On 12/20/2012 11:49 PM, Eric Blake wrote: >> dd if=/dev/sda3 | pbzip2 -c2 | tee >(md5sum > /tmp/sda3.dat.bzip2.md5) | >> netcat 192.168.1.123 45678
> Wow! It was worth writing a patch just to discover the >(list) and > <(list) constructs. I knew about tee, but I had no idea about this, > thanks!! I've even known how to do this across programs written in C, I > just didn't know there was a bash mechanism for it. So I guess bash > substitutes the parameter name with the /dev/fd<n> or some such for the > named pipe it creates? I'll have to read up on it more. Without bash, you can do it manually with a named pipe: mkfifo /tmp/fifo md5sum /tmp/fifo > /tmp/sda3.dat.bzip2.md5 & dd if=/dev/sda3 | pbzip2 -c2 | tee > /tmp/fifo | netcat 192.168.1.123 45678 Have fun, Berny
