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Full Discussion: 1 script or multiple scripts?? - check files, run jobs
Top Forums Shell Programming and Scripting 1 script or multiple scripts?? - check files, run jobs Post 302254524 by jnanasakti on Tuesday 4th of November 2008 03:49:05 PM
Old 11-04-2008
Quote:
Originally Posted by jim mcnamara
one way:

Write a simple driver script, then use a data file to supply program name(s), data file -
use "progname -p parm1" for programs that require options.

mycontrolfile:
Code:
datafile1 script.sh "someprogram1 -p parm1 -q parm2"
datafile2 script1.sh someprogram3 anotherprogram script3.sh

script
Code:
#!/bin/ksh
while read datafile prog1 prog2 prog3  prog4  prog5
do
    if [[ ! -s $datafile ]] ; then  # no data file, skip over it?
        continue
    fi
    # run up to 5 programs against the datafile
    for prog in $prog1 $prog2 $prog3 $prog4 $prog5
    do
          "$prog" "$datafile"
    done 
done < mycontrolfile

For example, $prog3 (on first line in the input file) will evaluate to "" if it is empty. So the for loop terminates early. On the second line of datafile $prog5 is "".
Thanks for the Info and I appreciate the level of detail! Looks like a great approach that I'll have to further understand and utilize when I create the scripts (I'm in design phase right now). Curious, when you say 'read data file' in the script, is that synonomous with 'read mycontrolfile'? Or are those two different things? In addition, if you state 'prog1 prog 2' etc in the script file, how does the reference to 'someprogram1', 'anotherprogram' come into play?
 

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LEARN ABOUT SUSE

template::plugin::datafile

Template::Plugin::Datafile(3)				User Contributed Perl Documentation			     Template::Plugin::Datafile(3)

NAME

       Template::Plugin::Datafile - Plugin to construct records from a simple data file

SYNOPSIS

	   [% USE mydata = datafile('/path/to/datafile') %]
	   [% USE mydata = datafile('/path/to/datafile', delim = '|') %]

	   [% FOREACH record = mydata %]
	      [% record.this %]  [% record.that %]
	   [% END %]

DESCRIPTION

       This plugin provides a simple facility to construct a list of hash references, each of which represents a data record of known structure,
       from a data file.

	   [% USE datafile(filename) %]

       A absolute filename must be specified (for this initial implementation at least - in a future version it might also use the
       "INCLUDE_PATH").  An optional "delim" parameter may also be provided to specify an alternate delimiter character.

	   [% USE userlist = datafile('/path/to/file/users')	 %]
	   [% USE things   = datafile('items', delim = '|') %]

       The format of the file is intentionally simple.	The first line defines the field names, delimited by colons with optional surrounding
       whitespace.  Subsequent lines then defines records containing data items, also delimited by colons.  e.g.

	   id : name : email : tel
	   abw : Andy Wardley : abw@tt2.org : 555-1234
	   sam : Simon Matthews : sam@tt2.org : 555-9876

       Each line is read, split into composite fields, and then used to initialise a hash array containing the field names as relevant keys.  The
       plugin returns a blessed list reference containing the hash references in the order as defined in the file.

	   [% FOREACH user = userlist %]
	      [% user.id %]: [% user.name %]
	   [% END %]

       The first line of the file must contain the field definitions.  After the first line, blank lines will be ignored, along with comment line
       which start with a '"#"'.

BUGS

       Should handle file names relative to "INCLUDE_PATH".  Doesn't permit use of '":"' in a field.  Some escaping mechanism is required.

AUTHOR

       Andy Wardley <abw@wardley.org> <http://wardley.org/>

COPYRIGHT

       Copyright (C) 1996-2007 Andy Wardley.  All Rights Reserved.

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

       Template::Plugin

perl v5.12.1							    2008-11-13					     Template::Plugin::Datafile(3)
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