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Re: feature request: self join from stdin
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From: |
Bernhard Voelker |
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Subject: |
Re: feature request: self join from stdin |
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Date: |
Sun, 20 Oct 2019 19:33:34 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.0 |
On 2018-11-25 17:45, address@hidden wrote:
> Please consider a self join from stdin in coreutils.
>
> $ seq 3 | join -j2 - - | paste -s
> 1 1 1 2 1 3 2 1 2 2 2 3 3 1 3 2 3 3
What about tee'ing into a 'fifo' which is read again by join?
$ mkfifo fifo \
&& seq 3 | tee fifo | join -j2 - fifo | paste -s \
&& rm fifo
1 1 1 2 1 3 2 1 2 2 2 3 3 1 3 2 3 3
Have a nice day,
Berny