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Full Discussion: Create a script to monitor host interface up down
Top Forums Shell Programming and Scripting Create a script to monitor host interface up down Post 302542853 by momo0617 on Thursday 28th of July 2011 10:59:36 PM
Old 07-28-2011
Create a script to monitor host interface up down
Can anyone provide me some idea. I would like to create a script to monitoring some host interface up down issue. The scirpts will be schedule very 4 minutes to keep monitor the hosts interface. I draw my deside to show how to count the up down. default count value is 11111. that mean the interface is normal. it keep in up status. if the interface change to down. than it will be change to 11110. then the scripts will count it the 0 occurence more than 1 times it will do something like sent email. How can I campare with the old log and newlog to group the records to the newlog? or maybe do you have any good idea to be more esay to finish this scripts?

Counting the occurence of "0"
Code:
# echo "10101" | awk '{ x=gsub("0",""); print x }'
2
# echo "10001" | awk '{ x=gsub("0",""); print x }'
3
# echo "10000" | awk '{ x=gsub("0",""); print x }'
4

Two table format like the follow:

old log
###########
Code:
host Ip status Count
hosta XXX.XXX.XXX.XXX Critical 11011
hostb XXX.XXX.XXX.XXX Critical 11110

###########

newlog
###########
Code:
host Ip status Count
hosta XXX.XXX.XXX.XXX Critical 11110
hostc XXX.XXX.XXX.XXX Critical 11110

###########
Final group the records to templog and replace to the old log
###########
Code:
host Ip status Count
hosta XXX.XXX.XXX.XXX Critical 10110
hostb XXX.XXX.XXX.XXX Critical 11101
hostc XXX.XXX.XXX.XXX Critical 11110

###########
Last edited by pludi; 07-29-2011 at 03:13 AM..
 

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LEARN ABOUT DEBIAN

arpspoof

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

NAME

       arpspoof - intercept packets on a switched LAN

SYNOPSIS

       arpspoof [-i interface] [-c own|host|both] [-t target] [-r] host

DESCRIPTION

       arpspoof  redirects packets from a target host (or all hosts) on the LAN intended for another host on the LAN by forging ARP replies.  This
       is an extremely effective way of sniffing traffic on a switch.

       Kernel IP forwarding (or a userland program which accomplishes the same, e.g. fragrouter(8)) must be turned on ahead of time.

OPTIONS

       -i interface
	      Specify the interface to use.

       -c own|host|both
	      Specify which hardware address t use when restoring the arp configuration; while cleaning up, packets  can  be  send  with  the  own
	      address  as  well  as  with  the	address  of the host. Sending packets with a fake hw address can disrupt connectivity with certain
	      switch/ap/bridge configurations, however it works more reliably than using the own address, which is the default way arpspoof cleans
	      up afterwards.

       -t target
	      Specify a particular host to ARP poison (if not specified, all hosts on the LAN). Repeat to specify multiple hosts.

       -r     Poison both hosts (host and target) to capture traffic in both directions.  (only valid in conjuntion with -t)

       host   Specify the host you wish to intercept packets for (usually the local gateway).

SEE ALSO

       dsniff(8), fragrouter(8)

AUTHOR

       Dug Song <dugsong@monkey.org>

																       ARPSPOOF(8)
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