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Re: Does head util cause SIGPIPE?
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From: |
Pádraig Brady |
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Subject: |
Re: Does head util cause SIGPIPE? |
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Date: |
Sat, 26 Oct 2019 01:08:52 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:70.0) Gecko/20100101 Thunderbird/70.0 |
On 25/10/2019 08:56, Ray Satiro wrote:
Recently I tracked down a delay in some scripts to this line:
find / -name filename* 2>/dev/null | head -n 1
Some notes:
find(1) will only get the sigpipe if it writes _after_ head(1) exits.
The write pattern is dependent on the buffering in the pipeline. See:
https://www.pixelbeat.org/programming/stdio_buffering/
If you do want to only print a _single_ file, you can do this within find(1)
like:
find / -name 'initrd*' -print -quit
cheers,
Pádraig