8 Nov
2013
8 Nov
'13
11:29 p.m.
On Tue, Oct 22, 2013 at 07:07:34PM -0500, Andrew Ruder wrote:
env exists is a way to test (in hush) if an environment variable exists. A workaround existed using printenv but this new command doesn't require all the stdout/stderr redirection to prevent printing information to the screen.
Example: $ set testexists 1 $ env exists testexists && echo "yes" yes $ env exists testexists || echo "no" $ set testexists $ env exists testexists && echo "yes" $ env exists testexists || echo "no" no $
Signed-off-by: Andrew Ruder andrew.ruder@elecsyscorp.com
Applied to u-boot/master, thanks!
--
Tom