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Re: broken pipe

From: Brian J. Murrell
Subject: Re: broken pipe
Date: Wed, 13 Feb 2008 16:00:23 -0500

On Wed, 2008-02-13 at 14:56 -0600, Michael Potter wrote:
> Bash Bunch,
> I googled a bit and it see this problem asked several times, but I
> never really saw a slick solution:
> given this:
> set -o pipefail
> find / -type f -print 2>&1 |head -20
> echo ${PIPESTATUS[*]}
> prints this:
> 141 0
> find fails because it has a bunch of output, but head only will accept
> the first n lines.
> This is a problem for me because I have trap ERR & errexit & pipefail 
> activated.
> The solution I will use will be to write the find output to a file,
> then run head on it.

How about:

find / -type f -print 2>&1 | (head -20; cat >/dev/null)


find / -type f -print 2>&1 | head -20 || true

> I am hoping that someone on the group has a more graceful solution.

It is a shame for this particular reason that head does not (perhaps as
an option) consume it's input after displaying the 20 lines.


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