On 23/11/2006, at 7:19 PM, Erik de Castro Lopo wrote:
Michael Chesterton wrote:
I guess grep is detecting whether it's talking to a terminal, and
doesn't
buffer if it is (or probably line buffers).
If you are using
whatever | grep one | grep two
the first grep will detect that it is reading from a pipe and
writing to a pipe and will buffer writes as big as it can.
Grep has a --line-buffering option for a reason.
For any utilities that don't support this, you can use a separate
program to provide buffering.
ftp://ftp.mondorescue.org/src/buffer-1.19.tgz
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