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Top Forums Shell Programming and Scripting Fill missing numbers in second column with zeros Post 302568962 by shoaibjameel123 on Friday 28th of October 2011 10:36:11 PM
Old 10-28-2011
Fill missing numbers in second column with zeros

Hi All,

I have 100 files with names like this:

1.dat, 2.dat, 3.dat until 100.dat.

My dat files look like this:

Code:
42323 0
438939 1
434 0
0.9383 
3434 
120.23 3
234

As you can see in the second column, some numbers are missing. I want to fill those missing places with 0's in all dat files. I am using Linux. This is what I expect:
Code:
42323 0
438939 1
434 0
0.9383 0
3434 0
120.23 3
234 0

 

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

NAME
arp2ethers - convert arpwatch address database to ethers file format SYNOPSIS
arp2ethers DESCRIPTION
arp2ethers converts file arp.dat in the current directory into ethers(5) format on stdout. Usually arp.dat is an ethernet/ip database file generated by arpwatch(8). The arpwatch daemon in Debian will create different arp.dat depending 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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