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Full Discussion: Help With Ping Script
Top Forums Shell Programming and Scripting Help With Ping Script Post 302477383 by spmitchell on Saturday 4th of December 2010 07:15:01 PM
Old 12-04-2010
Help With Ping Script
Hello all...I'm new to Unix and learning. What I'm trying to create is a script that will ping a known range of IP addresses, say 192.168.1.1 to 192.168.1.254. For each address that no reply is received, that address will be written to a log file that will be emailed to an administrator. My wife (who started out as a programmer) hasn't been able to help because she hasn't done anything with Unix since 2000. Any help would be greatly appreciated. Here's a script that I think comes close but it isn't quite there and I'm not sure how to modify it.
Code:
HOSTS="Hostname Here"

# no ping request
COUNT=1

# email report when
SUBJECT="Ping failed"
EMAILID="me@mydomain.com"
for myHost in $HOSTS
do
count=$(ping -c $COUNT $myHost | grep 'received' | awk -F',' '{ print $2 }' | awk '{ print $1 }')
if [ $count -eq 0 ]; then
# 100% failed
  
fi
done
echo "Host : $myHost is down (ping failed) at $(date)" | mail -s "$SUBJECT" $EMAILID

Last edited by Scott; 12-04-2010 at 08:20 PM.. Reason: Please use code tags
 

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LEARN ABOUT DEBIAN

oidentd_masq.conf

oidentd_masq.conf(5)						File Formats Manual					      oidentd_masq.conf(5)

NAME

       oidentd_masq.conf - oidentd IP masquerading/NAT configuration file.

DESCRIPTION

       If you are using IP masquerading or NAT, oidentd can optionally return a username for connections from other machines.  Support for this is
       specified by calling oidentd with the -m (or --masq) flag and by creating an /etc/oidentd_masq.conf file.

       oidentd can also forward requests for an IP masqueraded connection to the machine from which connection originates by way of the -f option.
       This  will  only  work if the host to which the connection is forwarded is running oidentd with the -P (proxy) flag, or if the host's ident
       daemon will return a valid reply regardless of the input supplied by and the address of the host requesting the info  (some  ident  daemons
       for windows do this, maybe others).

FORMAT

       <IP Address|Hostname>[/<Mask>] <Ident Response> <System Type>

       The  first  field  contains the IP address or the hostname of a machine that IP masquerades through the machine on which oidentd runs.  The
       mask parameter can be either a network mask or a mask in CIDR notation.	A mask of 24 is equivalent to  255.255.255.0,  a  mask	of  16	is
       equivalent to 255.255.0.0, etc.

       The second field specifies the reply that oidentd will return for lookups to the host matching the IP address specified in the first param-
       eter.

       The third field specifies the operating system the machine matching the first parameter is running.

EXAMPLES

       <Host>[/<Mask>]		<Ident Response>    <System Type>
       192.168.1.1		     someone		 UNIX
       192.168.1.2		     noone		 WINDOWS
       192.168.1.1/32		     user1		 UNIX
       192.168.1.0/24		     user3		 UNIX
       192.168.0.0/16		     user4		 UNIX
       somehost 		     user5		 UNIX
       192.168.1.0/255.255.255.0     user6		 UNIX

AUTHOR

       Ryan McCabe <ryan@numb.org>
       http://dev.ojnk.net

SEE ALSO

       oidentd(8) oidentd.conf(5)

version 2.0.8							    13 Jul 2003 					      oidentd_masq.conf(5)
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