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Full Discussion: Random lines selection form a file.
Top Forums Shell Programming and Scripting Random lines selection form a file. Post 302203877 by McLan on Tuesday 10th of June 2008 05:35:28 AM
Old 06-10-2008
Random lines selection form a file.
Quote:
I have a data file with 1000 records, I would like to select 100 lines/records randomly from the data file(data.dat) to other file data_extract.dat

The contents of the data.dat file as below:
Code:
>cat data.dat
0001 Robbert
0002 Nick
0003 Mark
.......
1000 Jarek

Quote:
Do you have any suggestion for this with korn shell script?

Regards.
McLan
 

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LEARN ABOUT CENTOS

arp2ethers

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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