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From: =?UTF-8?Q?Jo=C3=A3o_Eiras?= <joao DOT eiras AT gmail DOT com>
Date: Fri, 20 Jul 2018 15:17:00 +0200
Message-ID: <CAJ+sA06X2dvZtCr7B2rLOH615++eG+s5QsYVg-nOqRd_4HMZyQ@mail.gmail.com>
Subject: Re: Why is stdin always a pipe?
To: cygwin AT cygwin DOT com
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>> $ [[ -p /dev/stdin ]] && echo pipe || echo nopipe
>> nopipe

Interesting, it's always a pipe for me. What about ls ?

$ ls -l /dev/stdin
prw------- 1 user None 0 Jun  4 15:54 /dev/stdin

>> $ [[ -t /dev/stdin ]] && echo term || echo noterm
>> noterm

The '-t' operator is used with file descriptors, so "[[ -t 0 ]]"
http://tldp.org/LDP/abs/html/fto.html

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