On Fri, Feb 13, 2015 at 05:10:42PM +0000, Pádraig Brady wrote: > bash though seems to connect the stdout of the process substitution > to the pipeline, which seems like a bug: > $ : | tee >(md5sum) | sha1sum > 253a7a49edee354f35b2e416554127cf29c85724 -
md5sum inherits the anonymous pipe to sha1sum as its stdout, because that's how child processes work. I don't see it as an error in bash, but rather in the script. You might want a construction like: : | tee >(md5sum >&2) | sha1sum Then you have md5sum writing to bash's stderr, and sha1sum writing to bash's stdout. Or you could get fancier with things like 3>&1.
