config_cmd_default.h: Add 'env exists' command
env exists allows scripts to query whether an environment variable exists. Enable by default as it adds only a trivial amount of code and can be useful in scripts. Signed-off-by: NSjoerd Simons <sjoerd.simons@collabora.co.uk> Reviewed-by: NHans de Goede <hdegoede@redhat.com> Reviewed-by: NStephen Warren <swarren@nvidia.com>
Showing
想要评论请 注册 或 登录