[chuck-users] Std.setenv() question
scott.smallwood at ualberta.ca
Sat Sep 19 16:03:16 EDT 2015
I don’t remember if HOSTNAME worked in the past. Maybe that’s why we created the custom variable to begin with.
But this solution works great, actually. Thanks Joel!
PS: I would still love to know why HOSTNAME seems to be treated differently than other vars as far as getenv() is concerned…if anyone out there has any theories...
[ - ] Scott Smallwood <http://www.scott-smallwood.com/> - Associate Professor - University of Alberta [ - ]
> On Sep 19, 2015, at 11:44 AM, Joel Matthys <jwmatthys at gmail.com> wrote:
> Hmm, the same happens for me. Perhaps $HOSTNAME is null until polled, so it is generated upon request by the command line call?
> One possible workaround is to set an env variable right before launching chuck, eg:
> NETNAME="$HOSTNAME" chuck myfile.ck
> and access Std.getenv("NETNAME") in your code.
> I wasn't aware of setenv or getenv before. Did getenv("HOSTNAME") work in the past?
> On 09/18/2015 08:53 PM, Scott Smallwood wrote:
>> Hey Chuckians…
>> Question for those who use Std.setenv(). I’m trying to resurrect some old code of mine that made use of a special environment variable we used to use in plork to identify machines over the network. In short: this was a variable we called “NET_NAME”, in which we specified the network name address (i.e. blah.local) on our local area wireless network.
>> What I’m wondering is this: in UNIX, there is usually a variable already in existence called “HOSTNAME”. For example, on my mac, when I type “echo $HOSTNAME” in the terminal, it returns a string that contains the name of my machine with .local appended to it.
>> However, when I try to recall this variable using Std.setenv(), I get nothing.
>> Anyone have any ideas here?
>> [ - ] Scott Smallwood <http://www.scott-smallwood.com/> - Associate Professor - University of Alberta [ - ]
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