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Re: piping tail -f through cut

From: Pádraig Brady
Subject: Re: piping tail -f through cut
Date: Fri, 8 Feb 2008 09:37:34 +0000
User-agent: Thunderbird (X11/20071008)

Bob van Loosen wrote:
> Hi everyone,
> Whenever I do this:
> tail -f  /var/log/kern.log | cut -f 8- -d " " | dd bs=1
> I get no output, but when I do this:
> tail -f  /var/log/kern.log | cut -f 8- -d " "
> I do get output, I'm using coreutils 5.97 on Ubuntu 7.10 64 bit.

I've documented that exact case here:

There's a patch for `cut` there,
which demonstrates how to add this functionality to coreutils.

Personally I think it would be great to add the buffering control
to glibc, so that most applications would benefit.
But Ulrich Drepper <sarcasm>in his usual amiable style</sarcasm>
suggested this was a silly idea.


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