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Operating Systems AIX really stuck- need to get a variable within a variable- AWK Post 302211068 by jeffpas on Wednesday 2nd of July 2008 02:18:35 PM
Old 07-02-2008
really stuck- need to get a variable within a variable- AWK

Hi all,

I have been struggling with this all day, and it is key to a conversion database I have to write.

The data converts the information out of an array using AWK, and basically all I have to do is figure out how to get the value of a variable inside a variable.

Right now at its simplest level, I have:


mpgw=13
CATEGORY=mpgw


I need to get the value 13 out of CATEGORY.



I have seen documentation that says you can do (within AWK):

findCATEGORY=eval echo CATEGORY

but this is just the same as:

findCATEGORY=CATEGORY

it is always mpgw, never 13. Does this make sense?
Perhaps it can be done within a function.
I would like to stay with AWK, or I have to start this conversion program completely over from scratch, and I've been working on it for days. SmilieSmilieSmilie

Thanks for any advice,

jeffpas


PS Perhaps a system call, writing and reading to an outside file, using a printf statement.............these are all things I'm investigating. But it has to be within the data stream (awk) so that it does it to every line being converted. No luck........

Last edited by jeffpas; 07-02-2008 at 03:27 PM..
 

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DPKG-AWK(1)						      General Commands Manual						       DPKG-AWK(1)

NAME
dpkg-awk - Utility to read a dpkg style db file SYNOPSIS
dpkg-awk [(-f|--file) filename] [(-d|--debug) ##] [(-s|--sort) list] [(-rs|--rec_sep) ??] '<fieldname>:<regex>' ... -- <out_fieldname> .. DESCRIPTION
dpkg-awk Parses a dpkg status file (or other similarly formatted file) and outputs the resulting records. It can use regex on the field values to limit the returned records, it can also be told which fields to output, and it can sort the matched fields. OPTIONS
-f filename --file filename The file to parse. The default is /var/lib/dpkg/status. -d [#] --debug [#] Each time this is specified, it increased the debug level. -s field(s) --sort field(s) A space or comma separated list of fields to sort on. -n field(s) --numeric field(s) A space or comma separated list of fields that should be interpreted as numeric in value. -rs ?? --rec_sep ?? Output this string at the end of each output paragraph. -h --help Display some help. fieldname The fields from the file, that are matched with the regex given. The fieldnames are case insensitive. out_fieldname The fields from the file, that are output for each record. If the first field listed begins with ^, then the list of fields that follows will NOT be output. BUGS
Be warned that the author has only a shallow understanding of the dpkg packaging system, so there are probably tons of bugs in this pro- gram. This program comes with no warranties. If running this program causes fire and brimstone to rain down upon the earth, you will be on your own. This program accesses the dpkg database directly in places, querying for data that cannot be gotten via dpkg. AUTHOR
Adam Heath <doogie@debian.org> DEBIAN
Debian Utilities DPKG-AWK(1)
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