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Date: Thu, 30 Apr 2009 05:56:22 -0600
From: Eric Blake <ebb9 AT byu DOT net>
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To: cygwin AT cygwin DOT com, kbrown AT cornell DOT edu
Subject: Re: Bash problem
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According to Ken Brown on 4/30/2009 5:27 AM:
> A build script I was running failed because it had a command of the form
> 'eval foo=bar time <command>'.  Here's a simple test case:

This is not cygwin specific.

> 
> $ eval foo=bar time true
> -bash: time: command not found
> 
> It works fine without foo=bar:
> 
> $ eval time true
> 
> real    0m0.060s

time is a special case.  It is BOTH a bash reserved word and an external
command (assuming you've installed the external package).  The difference
is what syntax you use.

$ time true # bash builtin
$ time foo=bar true # bash builtin
$ \time true # external
$ foo=bar time true # external

Adding eval in the mix does not change the syntax qualities; time is only
treated as the bash reserved word if it occurs FIRST in the pipeline (no
variable assignments may precede it).

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9 AT byu DOT net
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