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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: mcron service
Date: Fri, 24 Jun 2016 14:00:44 +0200
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To: Danny Milosavljevic <dannym@scratchpost.org>
Cc: guix-devel@gnu.org

Hello,

Danny Milosavljevic <dannym@scratchpost.org> skribis:

> I tried it out and can confirm that it still works. Nice!

Thanks for testing!

> Just curious, how would I specify the user to run the job under now?

Using Mathieu=E2=80=99s mcron branch (the =E2=80=98mcron2=E2=80=99 package,=
 which is the default
here), this is done via #:user, so:

  #~(job '(next-hour '(1))
          do-something
          #:user "danny")

I=E2=80=99ll add an example of this in the manual.

> How do I read the guix texinfo manual (using info) when the manual is not=
 installed (i.e. read directly from the git checkout)?

Using the standalone Info reader, you can run:

  info -f ./doc/guix.info

and using Emacs:

  C-u C-h i ./doc/guix.info RET

> (Also, I wonder whether it would make any sense to be able to specify a l=
ist of packages that have to be installed because of the scheduled job(s). =
Otherwise it could for example be that updatedb isn't available, right?)

I kept this example simple, but if you want to make sure it finds
=E2=80=98updatedb=E2=80=99, you can write it as:

  #~(job =E2=80=A6
         (string-append #$findutils "/bin/updatedb --foo"))

And if you want to avoid issues related to shell quoting:

  #~(job =E2=80=A6
         (lambda ()
           (execl (string-append #$findutils "/bin/updatedb")
                  "updatedb" "--foo")))

HTH!

Ludo=E2=80=99.