Hi Again Chris,
as I said, reading further into the Bash Scripting Guide, under the
special chars section I discovered that using ampersand to run
something in the background can cause a script to hang waiting for a
keypress. The solution is to place a wait command after the
background command. Be aware that they say that this ampersand hangs
usually happens with process that should write to stdout, I don't
know if your process is outputting something but anyway, more info is
always welcome...
I saw this fix at http://www.tldp.org/LDP/abs/html/x6618.html#WAITHANG
The & part is at http://www.tldp.org/LDP/abs/html/special-chars.html
So I guess your script would become:
#!/bin/bash
pw=[PasswordHere]
echo $pw | sudo -S /Library/RNSEServer/RNSEServer &
wait
exit 0
cheers
andre
PS: Bash scripting can do miracles!!!!
On Sep 29, 2005, at 1:46 PM, Andre Garzia wrote:
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
reading.
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
Cheers
andre
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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