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From: Andreas Engel <Andreas.Engel@marconi.com>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] test variable existence in hush
Date: Mon, 22 Aug 2005 12:57:58 +0200	[thread overview]
Message-ID: <20050822125758.00001da8@idefix> (raw)

Hi,

can anyone confirm that this is a bug in the hush shell: both

 test -n "$foo" && echo yes

and

 test -z "$foo" && echo yes

result in nothing echoed if foo is not defined. If, on the other hand,
foo is defined to a string containing blanks, both commands will echo
yes.

Is there another way to check the existence of a variable?

Regards,
  Andreas Engel 

             reply	other threads:[~2005-08-22 10:57 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-08-22 10:57 Andreas Engel [this message]
2005-08-22 12:21 ` [U-Boot-Users] test variable existence in hush Wolfgang Denk
2005-08-22 13:01   ` Andreas Engel

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