RE: Unix Q: Substring-ing an output.

Thanks Mark.

Yes that helps, in a way. I could use good ol' awk to parse the last field! However, a slight problem in the ps -ef output. If I do what you have suggested on my 'ps -ef' output below, I would only get RMAN as it is the only one in field #8. All the rest are in field #9. All I need now is figure out how to cut the last field then pipe it to your awk command. Ok I'm getting somewhere!

Rgds,
Ross

> -----Original Message-----
> From: Mark J. Bobak [mailto:mark_at_bobak.net]
> Sent: Monday, 28 October 2002 13:54
> To: Multiple recipients of list ORACLE-L
> Subject: Re: Unix Q: Substring-ing an output.
>
>
> As is often the case, there are a million ways to do this. Given the
> output listed, I'd do something like:
>
> ps -ef|grep pmon|grep -v grep|awk '{ print $8 }'|awk -F_ '{
> print $3 }'
>
> ps -ef -- get the programs that are running
> grep pmon -- get only those lines that have 'pmon' in them
> grep -v grep -- drop out the line that has 'grep pmon'
> awk '{ print $8 }' -- get the eighth column, the program name
> awk -F_ '{ print $3 }' -- parse the program name on the '_' and return
> the third field, the database name.
>
> Hope that helps,
>
> -Mark
>
> On Sun, 2002-10-27 at 20:43, Ross Collado wrote:
> >
> > Hi All,
> >
> > I want to feed my shell script with the names of currently running
> > databases. I thought of using ps -ef|grep [p]mon. What I
> got was the
> > following:
> > oracle 20113 1 0 Oct 25 ? 0:01 ora_pmon_TLDEV
> > oracle 898 1 0 Jul 22 ? 0:06 ora_pmon_TLQA
> > oracle 944 1 0 Jul 22 ? 0:07 ora_pmon_TLQAVAR
> > oracle 19588 1 0 Oct 25 ? 0:00 ora_pmon_DBMON
> > oracle 13509 1 0 12:16:13 ? 0:00 ora_pmon_RMAN
> > oracle 20450 1 0 Oct 25 ? 0:00 ora_pmon_PRDINF
> > oracle 13026 1 0 Oct 26 ? 0:00 ora_pmon_TLDVVAR
> >
> > What I wanted is get only the db name part eg. TLDEV, RMAN,
> DBMON,etc. I
> > don't want to rely on oratab file.
> > I was thinking of using 'cut' to cut out the last field and
> do some ${X##}
> > (variable pattern substitution) to get to the dbname bit.
> The trouble is
> > the number of fields in a ps -ef output is not consistent.
> As you can see
> > I've just restarted RMAN and now it only has 8 fields as
> compared to 9 for
> > the others.
> >
> > Any suggestions? Or another way of doing it?
> > Using KSH on Solaris 8.
> >
> > Thanks.
> > Ross
> --
> --
> Mark J. Bobak
> Oracle DBA
> mark_at_bobak.net
> "It is not enough to have a good mind. The main thing is to use it
> well."
> -- Rene Descartes
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Mark J. Bobak
> INET: mark_at_bobak.net
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Ross Collado
  INET: Ross.Collado_at_techpac.com

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