On Thu, Dec 2, 2010 at 11:49 PM, Greg Wooledge <wool...@eeg.ccf.org> wrote:
> On Thu, Dec 02, 2010 at 07:04:57PM +0800, Clark J. Wang wrote: > > Following command also prints nothing, confused :( > > > > for ((i = 0; i < 10; ++i)); do echo -n " $i"; done | while read v; do > echo > > $v; done > > The output from the first command in the pipeline does not end with a > newline. Therefore, 'read' in the second command returns 'failure' > (non-zero) when it reads the first line of input, and your loop never > iterates. > But is that reasonable? I think read should return success in this case which makes more sense to me. Does the POSIX standards require that? -- Clark
