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From: Pier Paolo Grassi <pierpaolog@gmail.com>
To: Zsh-Users List <zsh-users@zsh.org>
Subject: read with redirected stdin
Date: Sat, 7 Jan 2023 14:31:14 +0100	[thread overview]
Message-ID: <CAP+y1xBo2fS--G8k+PbwEwJJx2d_s7ZxAJWrTNTJpE+MBB2x2w@mail.gmail.com> (raw)

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Hello, I have a script that asks to create a target dir if it doesn't exist.
to that extend I inserted an
read -k1
in the script.
To be able to ask the user for confirm even when the script stdin is
connected to a pipe I did
read -k1 < /dev/tty
I now would like to be able to deactivate this behavior when the process
has no controlling terminal, eg when run from cron. To simulate this I
tried:

setsid zsh -c 'read -k1 < /dev/tty'

which gives:
zsh:1: no such device or address: /dev/tty

how can I prevent this error, so that I don't invoke read when there is no
controlling terminal for the current process?
thanks

Pier Paolo Grassi

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             reply	other threads:[~2023-01-07 13:32 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-07 13:31 Pier Paolo Grassi [this message]
2023-01-07 13:44 ` Roman Perepelitsa
2023-01-07 17:21   ` Pier Paolo Grassi
2023-01-07 17:31     ` Roman Perepelitsa
2023-01-07 17:36       ` Pier Paolo Grassi
2023-01-07 17:52         ` Roman Perepelitsa
2023-01-08 13:23       ` Daniel Shahaf
2023-01-08 13:48         ` Roman Perepelitsa
2023-01-08 14:21           ` Daniel Shahaf
2023-01-08 14:42             ` Roman Perepelitsa
2023-01-07 17:33     ` Pier Paolo Grassi
2023-01-08  4:28     ` Jim
2023-01-08  4:44       ` Pier Paolo Grassi
2023-01-08 21:18         ` Jim
2023-01-09 16:01           ` Pier Paolo Grassi
2023-01-09 22:47             ` Jim
2023-01-10  2:46               ` Bart Schaefer
2023-01-10  6:03                 ` Pier Paolo Grassi
2023-01-08 14:44       ` Ray Andrews
2023-01-08 15:06         ` Roman Perepelitsa
2023-01-08 20:23           ` Ray Andrews

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