[Solved] awk oddity Post: 302888786

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Top Forums UNIX for Dummies Questions & Answers [Solved] awk oddity Post 302888786 by drl on Monday 17th of February 2014 10:10:50 AM

02-17-2014

Registered User

Hi.

Quote:

Originally Posted by djzah

.... Seriously just trying to learn and can't find any good beginner doco/books

A Google search for awk tutorial beginner OR novice produces about 70K hits. The first 2 looked good to me; I wrote and delivered a begiinning awk sub-course as part of a basic *nix series.

I agree with bakunin about the sed & awk book. See also:

Code:

Title: UNIX(R) Shells by Example 
Subtitle: ... guide to the C, Bourne, and Korn Shells plus Awk, Sed, and Grep
Author: Ellie Quigley
Edition: 4th
Date: 2004
Publisher: Prentice-Hall
ISBN: 013147572X
Pages: 1200
Categories: sh, csh, ksh, grep, sed, awk, scripting, shell, programming
Comments: 4.5 stars, 45 reviews Amazon (2007.07)
Comments: ( I have 2nd Ed, 1997 )
Comments: ( 4th edition includes bash and tcsh chapters )

and The AWK Programming Language: Alfred V. Aho, Brian W. Kernighan, Peter J. Weinberger: 9780201079814: Amazon.com: Books and Effective awk Programming (3rd Edition): Arnold Robbins: 9780596000707: Amazon.com: Books

Robbins is Mr GNU AWK (gawk).

Best wishes ... cheers, drl

drl

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LEARN ABOUT DEBIAN

dpkg-awk

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)