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Full Discussion: Need help to replace a pattern on specific line in a data file
Top Forums Shell Programming and Scripting Need help to replace a pattern on specific line in a data file Post 302686427 by anuj06 on Tuesday 14th of August 2012 01:29:43 PM
Old 08-14-2012
Quote:
Originally Posted by bartus11
Code:
awk 'NR==5{sub("-2.0000 2","1.0000 3",$0)}1' 1.dat > 1.fixed.dat

@bartus11

Thank you , it works !

---------- Post updated at 01:15 PM ---------- Previous update was at 01:12 PM ----------

Quote:
Originally Posted by Don Cragun
Code:
while read file
do
    ed -s "$file" <<-EOF
        5s/-2.0000 1/1.0000 3/
        w
        q
    EOF
done < list

@Don

Thank you, for your reply. But, it gives me error :

"syntax error: unexpected end of file"

Am I making some mistake.

here is the script I used


Code:
$ cat replace.sh 
#!/bin/bash

while read file
do
    ed -s "$file" <<-EOF
        21s/-2.0000       2/1.0000       3/
        w
        q
    EOF
done < list

---------- Post updated at 01:29 PM ---------- Previous update was at 01:15 PM ----------

Anyway, thank you guys ! Its working now
Last edited by Scott; 08-14-2012 at 03:12 PM.. Reason: Code tags
 

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LEARN ABOUT DEBIAN

arp2ethers

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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