RE: Korn shell function paramter passing
Date: Thu, 25 Jun 2009 08:29:07 -0400
Message-ID: <0684DA55864E404F8AD2E2EBDFD557DA02F23447_at_JAXMSG01.crowley.com>
Thanks
I was calling main
main | tee -a ${LOGFILE}
Removing tee solved the mystery.
Now I have another problem...because this will undoubtedly have the same behavior if I tee of runsomething.
The implication at first glance appears that all my print statements will each have to tee at least to the point of returning SUBJECT to the outermost shell (as the easiest and most forthcoming solution). I need SUBJECT to pass to function cleanup.
I probably need a different way of looking at my architecture, (which this was), the architecture of dynamically generated filenames and simultaneously seeing output to screen, and calling the script from cron.
The exec>&3 approach I suppose is another, but I haven't settled on anything yet I'm really happy with.
Joel Patterson
Database Administrator
904 727-2546
From: Niall Litchfield [mailto:niall.litchfield_at_gmail.com]
Sent: Thursday, June 25, 2009 8:15 AM
To: Patterson, Joel
Cc: oracle-l_at_freelists.org
Subject: Re: Korn shell function paramter passing
other reasons, less common
- you've called the main function either in the background or some other way that forks a new shell (eg a pipe).
- according to http://www.bolthole.com/solaris/ksh-functions.html you can get this when you use backticks - never done this myself.
On Thu, Jun 25, 2009 at 1:11 PM, <Joel.Patterson_at_crowley.com> wrote:
No.
Joel Patterson
Database Administrator
904 727-2546
From: Niall Litchfield [mailto:niall.litchfield_at_gmail.com]
Sent: Thursday, June 25, 2009 8:07 AM
To: Patterson, Joel
Cc: oracle-l_at_freelists.org
Subject: Re: Korn shell function paramter passing
are you using typeset to define local variables by any chance?
Niall
On Thu, Jun 25, 2009 at 1:00 PM, <Joel.Patterson_at_crowley.com> wrote:
Joel Patterson
Database Administrator
904 727-2546
This one I'm spending to much time on.
I have a korn shell script.
#!/usr/bin/ksh
Do some initialization commands
Call a function startlogfile
Call function 'main'
main calls function runsomething
Runsomething initializes and returns "${SUBJECT}"
main can print ${SUBJECT}
main returns ${SUBJECT} (or "${SUBJECT}", or ASUBJECT=${SUBJECT}
successfully ${ASUBJECT}, or "${ASUBJECT}"
outer most shell cannot print $SUBJECT
what's going on?
Thanks,
-- http://www.freelists.org/webpage/oracle-l -- Niall Litchfield Oracle DBA http://www.orawin.info <http://www.orawin.info/> -- Niall Litchfield Oracle DBA http://www.orawin.info -- http://www.freelists.org/webpage/oracle-lReceived on Thu Jun 25 2009 - 07:29:07 CDT