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Message-ID: <41B305B2.7030805@ieee.org>
Date: Sun, 05 Dec 2004 12:57:22 +0000
From: Jason Pearce <jason DOT pearce AT ieee DOT org>
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To: cygwin AT cygwin DOT com
Subject: Re: Environment variables & system privilages
References: <41B1A1C4 DOT 6020102 AT ieee DOT org> <Pine DOT GSO DOT 4 DOT 61 DOT 0412041531410 DOT 3217 AT slinky DOT cs DOT nyu DOT edu>
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Thanks. This works well enough. But I take it there is no universal 
command to check for system permissions.
The procedure is just try a command that needs system privilages and 
watch the exit status.

Also for the benefit of anyone reading this thread - there was an error 
in my original post. I dropped the "Environment" key from the registry 
path for setting system environment variables. It should have read.

regtool set -s 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment\FOO' 'BAR'

Jason

Igor Pechtchanski wrote:

>On Sat, 4 Dec 2004, Jason Pearce wrote:
>
>  
>
>>I have two seemingly simple questions that I just can't find the answers
>>to. Any assistance would be appreciated
>>
>>1. What's the "right" way to add add environment variables into the user and
>>system maps?
>>Currently I am using regtool to manipulate the registry. For instance to set
>>an environment variable FOO=BAR I do:
>>
>>regtool set -s '\HKEY_CURRENT_USER\Environment\FOO' 'BAR'
>>or
>>regtool set -s 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\FOO' 'BAR'
>>
>>The first form places it in the user's map, the second in the system
>>map. But will this work across patform? Is there a more preferred
>>method?
>>    
>>
>
>Well, that's probably the best you could hope for, if you want system-wide
>settings.  I'm not aware of any other command-line tool that would set
>these.  If you only want to set environment variables for Cygwin shells,
>you might want to edit /cygwin.bat instead.
>
>  
>
>>2. How can I test whether my script is running with system privilages?
>>ie I want to write a script that installs a mount and sets and environment
>>variable. If the script is running with system privilages I want to make the
>>change system wide. Otherwise, in the user's profile.
>>    
>>
>
>Why not try mounting with system privileges first?  'mount' will fail if
>it's unable to set mounts, and you can fall back on user mounts.  In other
>words:
>
>#!/bin/sh
>if mount -tfs d:/projects /projects; then
>   regtool set -s 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\FOO' 'BAR'
>else
>   # User ony
>   mount -tfu d:/projects /projects
>   regtool set -s '\HKEY_CURRENT_USER\Environment\FOO' 'BAR'
>fi
>
>  
>
>>#!/bin/sh
>>if [ ??????? ]
>>then
>> # Sytem wide
>> mount -tfs d:/projects /projects
>>   regtool set -s 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\FOO' 'BAR'
>>else
>> # User ony
>> mount -tfu d:/projects /projects
>> regtool set -s '\HKEY_CURRENT_USER\Environment\FOO' 'BAR'
>>fi
>>
>>What do I put in place of the ??????
>>    
>>
>
>HTH,
>	Igor
>  
>


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