On 2014-03-07, at 12:43, Jason Miller wrote:
> Reading this:
>
> http://pubs.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_09_01_01
>
> Any built-in other than the special built-ins, or listed in the table
> there should not be run unless it is present in the PATH.
> ...
> Of course I can't find a single shell that follows this, even when
> enabling its respective strict POSIX mode.
>
z/OS:
http://pic.dhe.ibm.com/infocenter/zos/v2r1/topic/com.ibm.zos.v2r1.bpxa500/toc.htm
user@HOST: uname -a
OS/390 MVS3 23.00 03 2818
user@HOST: type echo
echo is a built-in command
user@HOST: PATH=/bin echo Hello
Hello
user@HOST: PATH=/foo echo Hello
echo: FSUM7351 not found
> ... I'm guessing it was added to
> prevent changes in behaviors of existing scripts as shells add more
> builtins.
>
I would agree.
-- gil
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