Pádraig Brady writes: > find /disk1 | xargs md5sum & find /disk2 | xargs md5sum > > Note if we're piping/redirecting the output of the above > then we must be careful to line buffer the output from md5sum > so that it's not interspersed.
That doesn't sound right, nor sufficient. If you pipe the output, you shouldn't have a problem in any case, as long as output is done in chunks less than PIPE_BUF. If you redirect the output, you need to use append mode: >> file rather than > file. Otherwise, you still have a race, it's just less likely to be won. Of course, line buffering by default still seems like a good idea. Cheers, Ralf
