elif is a contraction of else if used to extend if statements
if Foo do x
elif Bar then y
elif dah then z
else ....
etc
I *think* the -z is to see if variable is set or not (ie - unset variables = 0)
the SMTP_CDB looks like a qmail variable, but my guess is the line in question
is checking to see if SMTP_CDB variable in a qmail config file has been assigned
a value.
HTH
Steve
Email Lists wrote:
> Greetings
>
> Im am not a perl programmer yet I am trying to learn and am debugging
> someone elses perl run script for use on a centos production box I have and
> I came across this
>
> elif [ -z "${SMTP_CDB:-}" ]
>
> Can someone please shed some light on what this eval means in English
> please?
>
> im mainly concerned with the stuff between the two " yet I need all the help
> I can get
>
> what does that say? Im trying to figure out if there is a typo or something
> in the script.
>
> I am not a perl programmer yet im sure I will be before I get done with this
> exercise in the next coupla weeks
>
> Thanks and kind regards
>
> - rh
>
>
>
>
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