Re: -a broken, -e correct

[Paul Jarc]

Ross Vandegrift <ross@willow.seitz.com> wrote:
> It looks like [ -a foo ] and [ ! -a foo ] both return true when foo is a
> file that exists.

-a is a binary operator as well as a unary operator.  [ A -a B ] is
true if A and B are both true.  A single string is true if it is
nonempty, so "!" and "foo" are both true.  You can get the effect you
want this way: ! [ -a foo ]


paul