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[Derek Martin]

On Sat, Aug 04, 2001 at 10:45:22AM -0400, Jerry Feldman wrote:
> Actually ksh does not implement [ as a builtin. It uses [[ as a builtin.
> Derek Martin wrote:
 
Having been told in a shell scripting class I took in 1996 that
virtually all modern shells implemented test as built-ins, I was
curious enough about this to download the source for ksh93 from AT&T's
website:

  http://www.research.att.com/sw/download/

Actually, though the man page included does not say so (it refers you
to the man page for test(1)), ksh93 does implement test (and [) as a
shell built-in command.  From src/cmd/bltin/test.c:

/*
 * test expression
 * [ expression ]
 *
 *   David Korn
 *   AT&T Labs
 *   research!dgk
 *
 */



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Derek Martin          |   Unix/Linux geek
ddm at pizzashack.org    |   GnuPG Key ID: 0x81CFE75D
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