Unix scripting help

Andre Garzia soapdog at mac.com
Thu Sep 29 12:46:29 EDT 2005

Hello Chris,

First of all, I recommend taking a look at http://www.tldp.org/LDP/ 
abs/html/ which is the Advanced Bash Scripting Guide. A very good  

There's a chapter under basic called exit and exit status which I  
think will cover what you need, if all you need is a return value for  
your script then use "exit 0" for zero is the default OK for unix.

I'll further check the guide to see if the background command you're  
using (&) can be called from scripts, if I discover something new,  
I'll send a new email to the list, in the mean time if exit 0 works,  
drop me a note. :D


On Sep 29, 2005, at 1:14 PM, Chris Sheffield wrote:

> I can't get this to go through for some reason.  So here it is again.
> I hope I'm not totally off topic here.
> I've got an installer in Rev that has to start a process under OS X  
> using the shell function.  I'm able to get the process to start  
> just fine using a command line script.  But the problem I'm having  
> is this particular process does not return any value when started,  
> and the shell command is not exiting because of this (at least  
> that's what I assume is happening).  So my script just kind of  
> hangs at that point.  The process I'm starting is the Valentina  
> database server.
> So what I'm looking for is a way to run my script, which starts the  
> process, but include in my script something that says, "Okay, I'm  
> finished now", and will allow my handler to go on at that point.   
> This is the current script I'm running with the shell function:
> #!/bin/sh
> pw=[PasswordHere]  -- this is obtained earlier with an  
> authentication dialog
> echo $pw | sudo -S /Library/RNSEServer/RNSEServer &
> exit
> Now, if I run these lines one at a time from a Terminal window  
> everything works great.  But if I run the script all at once,  
> whether from Revolution or from a Unix script file, it hangs,  
> almost as if the exit command isn't executing.  So is there  
> something I can use in place of 'exit' that will cause my script to  
> finish?  Or is there same way to cause the shell function not to  
> wait like it does by default?  I was previously using "open  
> process" instead of shell, and that worked except that it would  
> launch the process as the user who was logged into the computer  
> rather than as the root user, and I need it to run as root.
> Any help would be appreciated.
> Thanks,
> Chris
> ------------------------------------------
> Chris Sheffield
> Read Naturally
> The Fluency Company
> http://www.readnaturally.com
> ------------------------------------------
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