topic Re: Basic script issue in Operating System - HP-UX

Basic script issue

frederick hannah — Thu, 12 Jun 2008 16:12:02 GMT

I am trying to write a simple script that will read tape media located in a file and run a command against each tape in the file. Of course I am learning as I go along, but can any help me? FYI: I am on an 11.11 platform.

Re: Basic script issue

James R. Ferguson — Thu, 12 Jun 2008 16:21:54 GMT

Hi:

For the sake of the example, assume that the input file has whitespace-delimited fields of a tapename and a tape number, like:

# cat ./inputlist
full_080603 789
increm_080604 900
increm_080605 877

...then, something like:

#!/usr/bin/sh
while read NAME SERIAL X
do
echo "${NAME} available"
done < inputlist

...will work...

The 'X' field will gobble up any fields that follow the 'SERIAL' field if is should exist. If the extent of what you want is just the 'NAME' then just write:

while read NAME X

...for the same reason.

Regards!

...JRF...

Re: Basic script issue

Pete Randall — Thu, 12 Jun 2008 16:22:32 GMT

I'm guessing from your description that a simple for loop might suffice. Something like:

for MEDIA in `cat medialist`
do
tar -xvf $MEDIA
done

I used tar since you didn't specify.

Pete

Re: Basic script issue

frederick hannah — Thu, 12 Jun 2008 16:37:02 GMT

thanks for quick replies, but neither answer seems to work. I have a file consisting of vsn that need to be read into the following program (example):

xxxxx xxxxx

The program can read only tape at a time. I know the answer is simple, but it escapes me.

Re: Basic script issue

Steven Schweda — Fri, 13 Jun 2008 02:23:37 GMT

It's possible that you know what you're
talking about, but it's far from clear to me.
I freely admit that my psychic powers are
weak.

Perhaps you could show what's in your "file
consisting of vsn", and what the resulting
command(s) you'd like generate would look
like. Given some actual information, you can
almost certainly find someone who can write
a script to do what you want. Given no
useful information, all you'll get will be a
lot of guesswork, which may be of limited
value.

Re: Basic script issue

Dennis Handly — Fri, 13 Jun 2008 03:01:46 GMT

>I have a file consisting of vsn:
xxxxx xxxxx

You need to make this simpler. Is it:
XXX VVVV YYY

Where you want to just extract the VVVV field?
If so, you change JRF's script to:
while read X VSN X; do
echo "${VSN} available"
done < inputlist

Re: Basic script issue

frederick hannah — Fri, 13 Jun 2008 11:31:42 GMT

In a nutshell, the file is structured as follows:

000001
000002
000003

A tower list of vsn's only. I am looking for a script that will read those vsn(s) into the following command:

bpmedia -movedb -ev -oldsever

Re: Basic script issue

James R. Ferguson — Fri, 13 Jun 2008 11:37:44 GMT

Hi (again):

I already provided what you need:

# cat vsnfile
000001
000002
000003

#!/usr/bin/sh
while read VSN
do
bpmedia -movedb -ev ${VSN} -oldsever
done < vsnfile

...it doesn't get any harder.

Regards!

...JRF...

Re: Basic script issue

frederick hannah — Fri, 13 Jun 2008 11:41:13 GMT

thanks for the assist

Re: Basic script issue

frederick hannah — Fri, 13 Jun 2008 11:41:54 GMT

It works. I appreciate the support