Long time listener first time poster. Hope someone can advise.
I have two files, 1000+ lines in each, two fields in each file.
After performing a sort, what is the best way to find exact matches where field $1 and $2 in file1 are also present in file2 on the same line, then output only those into file3?
Field 1 will always be unique within the files, but not field 2, there could be numerous entries of the same text.
So where field 1 and field 2 on a line in file 1, both only exist on the same line in file 2, output to file 3.
Thanks in advance.
File 1
Code:
abcdefgh name1
bcdefgha name2
nmrsthji namei
nmdherya wood
kasjfhsw moon
pqoweiru sun
wershgsy other
iundhstw tree
gfhskwyt mine
alskalak hoover
File 2
Code:
abcdefgh name1
bcdefgha name5
hjgdrnja namej
nmdherya notwood
kasjfhsw moon
wershgsy other
pqoweiru sun
gfhskwyt mine
alskalak hoover
--- Post updated at 02:25 PM ---
Confusing myself.
I dont mean field 1 and field 2 on line 3 in file 1, have to be on line 3 in file 2.
But field 1 and 2 on line 3, must match in file 2, on any line, then output to file 3.
Moderator's Comments:
Please use CODE tags as required by forum rules!
Last edited by RudiC; 01-24-2019 at 10:28 AM..
Reason: Added CODE tags.
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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)
01-24-2019
