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Re: Strange behaviour with defaults read in install script
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Re: Strange behaviour with defaults read in install script


  • Subject: Re: Strange behaviour with defaults read in install script
  • From: Bill Coderre <email@hidden>
  • Date: Mon, 09 Mar 2009 12:27:14 -0700

Of course that is correct. In general, if your installer was launched from the command line, it is not cool to try to interact with the user.

In the command line case, the environment variable COMMAND_LINE_INSTALL will be set.



On Mar 9, 2009, at 11:41 AM, Nigel Kersten wrote:
On Mon, Mar 9, 2009 at 11:24 AM, Bill Coderre <email@hidden> wrote:
BEFORE the user clicks "Install," anything the installer does is run as the
console user.
AFTER that, for most installs, anything the installer does is run as root.
(ie. if the installer requires an admin password)
The environment variable USER is set to the console user short user name, so
you probably want to do


su $USER -c "defaults read -g AppleLocale"

Actually you probably *don't* as relying upon $USER in the environment will break your package for all remote deployments via ARD, ssh/root, or just about any large package deployment system.

Is this the right setting? It shows up as English for me...

defaults read /Library/Preferences/.GlobalPreferences AppleLanguages

and doesn't rely upon any user environments.




to get the favorite language.
Now, if you are trying to install, say, just one language, that's not
standard. Mac OS X installers typically install all the languages, and the
few users that are concerned can run a utility to get rid of unused
languages (Monolingual is one).
If you want to get a language to show the user some text during install:
1) Please try to do all your interaction before the user clicks install
2) if you can't do that, do


su $USER -c "whatever_command arguments"

On Mar 9, 2009, at 10:09 AM, Glover,David wrote:

I'm trying out a few different things to retrieve the default language
the machine is running in.


What is really strange is that this works ok in a script...

defaults read -g AppleLocale

But that's not perfect as it's the language I'm trying to retrieve
rather than the locale. By getting AppleLanguages, I can get the first
language in the list.



-----Original Message----- From: Karl Kuehn [mailto:email@hidden] Sent: 09 March 2009 17:00 To: Glover,David Cc: Installer-Dev mailing-list Subject: Re: Strange behaviour with defaults read in install script

On Mar 9, 2009, at 9:45 AM, Glover,David wrote:

I'm using a preinstall script to read the available languages on the

machine as follows;

defaults read -g AppleLanguages

This is fine via a Terminal command, or when running the script by

Terminal, but when the script is run by Installer, the following is

outputted;

"The domain/default pair of (kCFPreferencesAnyApplication,

AppleLanguages) does not exist"

Has anybody come across this unusual behaviour before?  Why has

Installer decided to start lying to me?

Installer isn't lying to you, it is telling you that for the
user
that you are running at at that point the list of default languages is
not. This is true for any non-GUI user (try running this with sudo for
instance). This command is essentially calling:


defaults read .GlobalPreferences AppleLanguages

And many users do not have a file at
~username/.GlobalPreferences.plist

What are you really trying to accomplish here? And are you sure
that
the installer is the appropriate place for this?

--
Karl Kuehn
email@hidden




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References: 
 >Strange behaviour with defaults read in install script (From: "Glover,David" <email@hidden>)
 >Re: Strange behaviour with defaults read in install script (From: Karl Kuehn <email@hidden>)
 >RE: Strange behaviour with defaults read in install script (From: "Glover,David" <email@hidden>)
 >Re: Strange behaviour with defaults read in install script (From: Bill Coderre <email@hidden>)
 >Re: Strange behaviour with defaults read in install script (From: Nigel Kersten <email@hidden>)

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