Daniel@0: #!/usr/bin/env bash
Daniel@0: # Insert rptlen into a pipeline to report the number of bytes passing through.
Daniel@0: # NB. if the pipeline is terminated early by a later consuming process, the 
Daniel@0: # byte count will be wrong.
Daniel@0: function buflen {
Daniel@0: 	len=$(length)
Daniel@0: 	echo "$1:" $len
Daniel@0: }
Daniel@0: function buflen2 {
Daniel@0: 	length | sed -e "s/^/$1:/" 
Daniel@0: }
Daniel@0: tee >(buflen2 "$1" 1>&2)