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UNIX for Dummies Questions & Answers
AWK ??-print for fields within records in a file
Post 302257728 by hyennah on Thursday 13th of November 2008 12:58:59 AM
11-13-2008
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Hi,
I have a comma (,) delimited file, in which few fields are enclosed with in double quotes " ". I have to print the records in the file which donot have expected number of field with the line number.
File1
====
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input:
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ref.2;rack.3;1 #group3
ref.2;rack.3;2 #group3
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Hi experts,
I need to print the first field first then last two fields should come next and then i need to print rest of the fields.
Input :
a1,abc,jsd,fhf,fkk,b1,b2
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Hi,
input:
AA|BB|CC
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FF
what I am trying to get:
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DD|EE|
FF||
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function repeat(str, n, rep, i)
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Hi
I have a file as below
<field1> <field2> <field3> ... <field_num1> <field_num2>
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Hello:
I want to print out the even number of fields plus the first column as row identifiers.
input.txt
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A 700 A 1200 A 400 A 1300
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Hi,
My input looks like that:
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B|789|dfgh
Using awk, I am trying to get:
A|123;456|qwer;tyui;wsxe
B|789|dfgh
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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)