Linus Torvalds <torva...@linux-foundation.org> wrote:
>
> See:
>
> [torvalds@ryzen ~]$ a="!" [ "$a" = ".size" ]
>
> is fine, but
>
> [torvalds@ryzen ~]$ a="!" [ $a = ".size" ]
> -bash: [: =: unary operator expected
This isn't doing what you think it's doing. The first assignment
to a is not in effect when the shell is expanding $a so what you're
actually running is
a="!" [ = .size ]
Which is why it bombs out.
To get the desired result you need a semicolon:
$ a="!"; [ $a = ".size" ]
$
Cheers,
--
Email: Herbert Xu <herb...@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
