[ale] sometimes I hate bash

[Jim Kinney]

set -x provides to useful insight. Maybe I need to get stronger glasses...

Something that crossed my mind: In the script are multiple sub scripts being
called to do the actual operations. So to facilitate logging I wrapped each
external call using script -a -c "scriptname param1 param2, etc" "$log_file"

This will take the contents of any output from the scripts and dump them to
the log_file. So there is two processes with identical name plus a third for
the actual script itself. I thing the first is the script command itself,
the second is the process that does the IO redirection and the third is the
actual called script running.

I have a very strong suspicion that the screen IO redirect with script is
not compatible with a no stdout cron. script was designed to exactly copy
what is done on a screen session (spaces, tabs and backspaces) so it can
literally be replayed either at the end of pipe or later as a process.

I'm not sure how cron does its IO but if it loops back on itself that would
allow each script process to launch a second run of each process.


AAAARRRRGGGGHHHH!

so much for being clever.

Back to the basic 1>>"$log_file" 2>&1

On Wed, Dec 16, 2009 at 7:36 PM, Tim Watts <timtw at earthlink.net> wrote:

> Does set -x reveal anything?
>
> Would it behave better if you didn't source .bash_profile (without
> opening up another can o worms)?
>
>
> On Wed, 2009-12-16 at 19:13 -0500, Jim Kinney wrote:
> > 2 8 * * * /home/user/bin/scriptname
> >
> > same incarnation works with a different script in the same directory
> > but has no database work to do.
> >
> > BTW: <esc>wq won't email in gmail as I just tried and discovered
> > (without a vi plugin I saw)
> >
> > On Wed, Dec 16, 2009 at 7:00 PM, JK <jknapka at kneuro.net> wrote:
> >         Post the crontab line, please?
> >
> >
> >         On 12/16/2009 4:49 PM, Jim Kinney wrote:
> >         > script runs all hunky-dorey in userland.
> >         >
> >         > so time to put it into cron. To cover my bases for inferior
> >         cron
> >         > environemnt, the first thing the script does is .
> >         ~/.bash_profile which
> >         > in turn runs ~/.bash_rc which runs /etc/bashrc
> >         >
> >         > So it now looks just like a login env.
> >         >
> >         > maybe...
> >         >
> >         > Except somehow it now spawns _2_ copies of the running
> >         process and the
> >         > race is on! <insert appropriate swearing here>
> >         >
> >         > Since it's highly sequence dependent data processing and
> >         database
> >         > insertion and database processing, multiple out of order
> >         steps is very,
> >         > VERY bad.
> >         >
> >         > Solution: make the first line a -f test for a pid file and
> >         exit if it
> >         > exists. The second line writes the pid file. Shouldn't have
> >         to do this...
> >         >
> >         > Still totally stumped on the multiple simultaneous
> >         processes.
> >         >
> >         > --
> >         > --
> >         > James P. Kinney III
> >         > Actively in pursuit of Life, Liberty and Happiness
> >         >
> >         >
> >         >
> >
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> >
> > --
> > --
> > James P. Kinney III
> > Actively in pursuit of Life, Liberty and Happiness
> >
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>
> ________
> I believe love is primarily a choice and only sometimes a feeling. If
> you want to feel love, choose to love and be patient.
> -- Real Live Preacher
>
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-- 
-- 
James P. Kinney III
Actively in pursuit of Life, Liberty and Happiness
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