10-25-2010
Retriving the first line of data from the listing
Hi All,
I have a problem of retrieving the first line of data from the listing i got back from this command :
ls -l * | awk '{print $9}' | awk -F. '{print $3}' | sort -g
the files names are in the folder are like
month.dat.201010210400
day.dat.201010210401
year.dat.201010210402
As the folders contains other files which doesn't match the pattern ,
i get back results with blanks spaces in front of the listing .
eg :
201010210400
201010210401
201010210402
how do i omit the blanks spaces and read the first line of data from the result ? i tried using 'head -1' but it is returning me the blank row
Thanks
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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)