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Top Forums Shell Programming and Scripting Awk/sed/cut to filter out records from a file based on criteria Post 302999834 by vgersh99 on Wednesday 28th of June 2017 01:15:52 PM
Old 06-28-2017
not sure of the desired output... try switching the order of the prod.dat and prod_last.dat files on a cli.
Code:
awk '
{s=substr($0,361,9)}
FNR==NR {
  f1[s]=$1
  next
}
NF && s in f1 && f1[s]==$1' prod.dat  prod_last.dat


Last edited by vgersh99; 06-28-2017 at 02:54 PM..
 

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ARP2ETHERS(8)						      System Manager's Manual						     ARP2ETHERS(8)

NAME
arp2ethers - convert arpwatch address database to ethers file format SYNOPSIS
arp2ethers [ arp.dat file ] DESCRIPTION
arp2ethers converts the file /var/lib/arpwatch/arp.dat (or the file specified on the command line) into ethers(5) format on stdout. Usu- ally arp.dat is an ethernet/ip database file generated by arpwatch(8). The arpwatch daemon in Debian will create different arp.dat depend- ing on its configuration. All of them will be available at /var/lib/arpwatch/. FILES
/var/lib/arpwatch - default directory for arp.dat arp.dat - ethernet/ip address database SEE ALSO
arpwatch(8), ethers(5), rarp(8), arp(8), BUGS
Please send bug reports to arpwatch@ee.lbl.gov. AUTHORS
Original version by Craig Leres of the Lawrence Berkeley National Laboratory Network Research Group, University of California, Berkeley, CA. Modified for the Debian Project by Peter Kelemen, with additions from Erik Warmelink. The current version is available via anonymous ftp: ftp://ftp.ee.lbl.gov/arpwatch.tar.gz This manual page was contributed by Hugo Graumann. ARP2ETHERS(8)
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