[Haskell-beginners] running shelly script from root's crontab

Miguel Negrão miguel.negrao-lists at friendlyvirus.org
Fri Jul 12 16:34:37 CEST 2013

Hi Peter,

Em 12-07-2013 15:02, Peter Jones escreveu:
> Miguel Negrão <miguel.negrao-lists at friendlyvirus.org> writes:
>> I have a shelly script that runs fine from my user account which I
>> would to run every night. It needs to sudo to call some other
>> processes so I need to add it to the root's crontab (sudo crontab
>> -e). Unfortunately the script will fail to run because it can't find
>> several modules, since it's running from the root account. Is there a
>> way to make this work without having to install the packages globally
>> (sudo cabal install --globally) ? I just tried that and manage to
>> completely ruin my haskell installation, so I had to revert to
>> previous backup.
> Miguel, it sounds like you're using `runhaskell' to execute your code.
> Is there any reason you can't compile the code using GHC?  With an
> executable binary you wouldn't need anything from Haskell available to
> the root user.

Indeed, I was using runhaskell to avoid the compile step, but off 
course, the obvious solution is to compile to a binary, that works 
perfectly !

Miguel Negrão

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