[Swift-user] Question: Setting environment variables

[wilde at mcs.anl.gov]

----- "Taleena R Sines" <trsines0 at frostburg.edu> wrote:

> The code I'm transforming has several environment variable sets, so
> would I be adding every one to the data file?

You can specify multiple environment variables on a single application in tc.data like this:

localhost  env  /usr/bin/env none  none  ENV::VAR1="value1";ENV::VAR2="value2"

> After adding them to the file, would I need to do anything in the
> actual script to invoke changes?

Environment variables are typically specified entirely in tc.data, so you don't need to do anything in your .swift script related to them (unless you need to change their value with each invocation of your program, which would require some coordination between your .swift script and a shell wrapper around your program to pass such values on the command line. But I suspect you are not doing that at this point.)

Regarding "invoke changes" - sounds like you might be thinking in terms of compiling or building, as in "cc" and "make". But Swift basically compiles, interprets, and executes your script from the .swift source code each time you run the swift command. So there is effectively nothing that needs to be done between changing your tc.data and .swift file, and then executing the swift command again to try your changes.

- Mike

> 
> Thank you, I'm sorry for the stream of questions

No problem, but please please please send them to swift-user :) so that more people can answer you and more can benefit from the answers.

> Taleena R. Sines
> Major: Computer Science
> 
> 
> 
> -----Original Message-----
> From: Michael Wilde [ mailto:wilde at mcs.anl.gov ]
> Sent: Fri 5/28/2010 1:04 PM
> To: Taleena R Sines
> Cc: Swift User
> Subject: Re: [Swift-user] Question: Setting environment variables
> 
> Did you make sure that all the fields are separated by a tab
> character, not spaces?
> If that was not the cause, I'll need to double-check and test my
> syntax.
> 
> (please send all your replies back to the swift-user list).
> 
> - Mike
> 
> 
> ----- "Taleena R Sines" <trsines0 at frostburg.edu> wrote:
> 
> > I inserted that line and it is giving me the error:
> > unexpected token: /
> >
> >
> > Taleena R. Sines
> > Major: Computer Science
> >
> >
> >
> > -----Original Message-----
> > From: Michael Wilde [ mailto:wilde at mcs.anl.gov ]
> > Sent: Fri 5/28/2010 12:48 PM
> > To: Taleena R Sines
> > Cc: Swift User
> > Subject: Re: [Swift-user] Question: Setting environment variables
> >
> > For:
> >
> > setenv CODE_HOME /trsines/code/my_code
> >
> > the example:
> >
> > localhost myapp /usr/bin/env none none ENV::myenvvar="something";
> >
> > would become:
> >
> > localhost myapp /usr/bin/env none none ENV::CODE_HOME
> > ="/trsines/code/my_code";
> >
> > - Mike
> >
> > ----- "Taleena R Sines" <trsines0 at frostburg.edu> wrote:
> >
> > > If my code in c-script is :
> > > setenv CODE_HOME /trsines/code/my_code
> > >
> > > What would actually be typed in the swift-script in place of that?
> > > thank you
> > >
> > > T. R. Sines
> > >
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: wilde at mcs.anl.gov [ mailto:wilde at mcs.anl.gov ]
> > > Sent: Fri 5/28/2010 12:15 PM
> > > To: Taleena R Sines
> > > Cc: swift-user at ci.uchicago.edu
> > > Subject: Re: [Swift-user] Question: Setting environment variables
> > >
> > > Taleena,
> > >
> > > You set env vars for a given app in the tc.data file using an "Env
> > > profile":
> > >
> > > http://www.ci.uchicago.edu/swift/guides/userguide.php#profile.env
> > >
> > > For example:
> > >
> > > localhost myapp /usr/bin/env none none ENV::myenvvar="something";
> > >
> > > Thats not real clear in the User Guide - we will fix that.
> > >
> > > - Mike
> > >
> > >
> > > ----- "Taleena R Sines" <trsines0 at frostburg.edu> wrote:
> > >
> > > > Hello,
> > > > In swift, how would I set an environment variable?
> > > > For example, in a c-script:
> > > > setenv WKDIR /user/bin
> > > >
> > > > would translate to swift how?
> > > > Thank you
> > > >
> > > > T. R. Sines
> > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > Swift-user mailing list
> > > > Swift-user at ci.uchicago.edu
> > > > http://mail.ci.uchicago.edu/mailman/listinfo/swift-user
> > >
> > > --
> > > Michael Wilde
> > > Computation Institute, University of Chicago
> > > Mathematics and Computer Science Division
> > > Argonne National Laboratory
> >
> > --
> > Michael Wilde
> > Computation Institute, University of Chicago
> > Mathematics and Computer Science Division
> > Argonne National Laboratory
> 
> --
> Michael Wilde
> Computation Institute, University of Chicago
> Mathematics and Computer Science Division
> Argonne National Laboratory

-- 
Michael Wilde
Computation Institute, University of Chicago
Mathematics and Computer Science Division
Argonne National Laboratory