checking for mail in non-interactive shell?

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Article #414

#414

From: Jean-Francois Lamy
Date: Thu, 03 Aug 1989 03:32

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Another one for gnu.bash.ufo:

Scenario: am in GNU emacs, and type the C-@C-uM-| invocation that results in
running a command in a subshell and replacing the currently selected piece of
text with the result.  Much to my surprise, a "You have mail in ..." string
appears in the output, which I can only attribute to bash being silly or to
some rather interesting file descriptor mix up.  Does bash really check for
mail in non-interactive shells???

Jean-Francois Lamy               lamy@ai.utoronto.ca, uunet!ai.utoronto.ca!lamy
AI Group, Department of Computer Science, University of Toronto, Canada M5S 1A4

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!neat.cs.toronto.edu!lamy

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!neat.cs.toronto.edu!lamy
Newsgroups: gnu.bash.bug
From: lamy@ai.utoronto.ca (Jean-Francois Lamy)
Subject: checking for mail in non-interactive shell?
Message-ID: <89Aug2.233140edt.10404@neat.cs.toronto.edu>
Date: 3 Aug 89 03:32:34 GMT