On Thu, 10 Feb 2011, Stefano Lattarini wrote:
but someone has argued against this, saying he knows of no shell where the
former is not acceptable. I realise this issue is probably more of a problem
with older shells,
Solaris 10 /bin/sh is not really old.
I do see the issues you mention with recently-patched /bin/sh on
Solaris 10. However, /usr/xpg4/bin/sh passes your tests with flying
colors on Solaris 10. The description of /usr/xpg4/bin/sh is
considerably different than /bin/sh:
"The /usr/bin/sh utility is a command programming language
that executes commands read from a terminal or a file."
"The /usr/xpg4/bin/sh utility is a standards compliant shell.
This utility provides all the functionality of ksh(1),
except in cases discussed in ksh(1) where differences in
behavior exist."
Interestingly, on Solaris 10, /bin/sh is a link to /sbin/sh, implying
that it is intended for purposes like system initialization scripts.
Bob
--
Bob Friesenhahn
bfriesen@xxxxxxxxxxxxxxxxxxx, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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