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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: run emacs in batch mode without a tty
Date: Fri, 03 Jul 2015 16:51:01 +0300
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> Date: Fri, 3 Jul 2015 06:26:37 -0700 (PDT)
> From: Sam Halliday <sam.halliday@gmail.com>
> 
> Emacs won't run without one. It just crashes.

It does?  It doesn't for me:

  emacs -batch --eval "(princ \"Hello, world\!\n\")" < /dev/null > foo

I get no crash and the expected message in the file 'foo'.

Anyway, if you see crashes due to lack of a TTY, please report that as
a bug using "M-x report-emacs-bug".