# czech@xxxxxxxxx / 2015-10-14 23:32:40 -0700:
I probably should have clarified - the objective of the test is to see
if
the environment variable is set or not. -z $ENV_VAR seems to return 1
if
the environment variable is not set or is set to null (zero bytes).
zshexpn(1):
${+name}
If name is the name of a set parameter `1' is substituted,
otherwise `0' is substituted.
ps your first email is a reply to an email with a completely unrelated
topic. don't do that.
891 Oct 14 jagmeet bali ( 49) ZSH feature request if not
present
892 Oct 14 ZyX ( 53) |->
893 Oct 14 Peter Stephenso ( 120) | `->
894 Oct 14 czech@xxxxxxxxx ( 60) `->Best Way to Test an
Environment Variable
895 Oct 14 czech@xxxxxxxxx ( 73) `->