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Old 05-08-2008, 04:21 AM   #1
hypercondor
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Registered: May 2008
Distribution: Slackware
Posts: 8

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Simple...ish ping script.


Ok i am making a script that will ping all active computers on the network and then output the the IP and hostnames to the screen.
So far i have
Code:
#!/bin/sh
echo
echo Machines responding on Network Address:  192.168.1.0
ping -b -c4 192.168.1.0 | grep "icmp_seq=1" | cut -f4 -d' ' | cut -f1 -d:
echo
My problem is that i cant think of a way to get rid of the
Code:
WARNING: pinging broadcast address
message, any help would be grateful
 
Old 05-08-2008, 05:39 AM   #2
Tinkster
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Registered: Apr 2002
Location: in a fallen world
Distribution: slackware by choice, others too :} ... android.
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Code:
#!/bin/sh
echo
echo Machines responding on Network Address:  192.168.1.0
ping -b -c4 192.168.1.0 2>/dev/null| grep "icmp_seq=1" | cut -f4 -d' ' | cut -f1 -d:
echo
Do you actually get responses? My switch would stop
that kind of non-sense ;}


Cheers,
Tink

Last edited by Tinkster; 05-08-2008 at 05:41 AM.
 
Old 05-08-2008, 03:23 PM   #3
thronh
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Registered: Jan 2006
Posts: 9

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You could always use nmap for your ping list. It takes a bit longer, but it gets rid of the warning.

nmap -sP 192.168.1.0-255 |sed '1,2 d'
 
Old 05-08-2008, 05:56 PM   #4
viron
Member
 
Registered: Dec 2005
Location: McKinney, Texas
Distribution: Slackware
Posts: 40

Rep: Reputation: 15
Quote:
Originally Posted by hypercondor View Post
Ok i am making a script that will ping all active computers on the network and then output the the IP and hostnames to the screen.
So far i have
Code:
#!/bin/sh
echo
echo Machines responding on Network Address:  192.168.1.0
ping -b -c4 192.168.1.0 | grep "icmp_seq=1" | cut -f4 -d' ' | cut -f1 -d:
echo
My problem is that i cant think of a way to get rid of the
Code:
WARNING: pinging broadcast address
message, any help would be grateful
Try the following:

ping -b -c4 192.168.1.0 | grep "icmp_seq=1" | cut -f4 -d' ' | cut -f1 -d: | sed -e 's/WARNING: pinging broadcast address//g'
 
Old 05-08-2008, 06:20 PM   #5
ncsuapex
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Registered: Dec 2004
Location: Raleigh, NC
Distribution: CentOS 2.6.18-53.1.4.el5
Posts: 770

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^ add | sort -n -t . -k 1,1 -k 2,2 -k 3,3 -k 4,4


to sort the IP by order.
 
Old 05-09-2008, 12:08 AM   #6
hypercondor
LQ Newbie
 
Registered: May 2008
Distribution: Slackware
Posts: 8

Original Poster
Rep: Reputation: 0
Thanks for the replys guys, I worked it out on my own in the end. i ended up scrapping the ping and using nmap as it made it alot easier to display the hostname.
Quote:
#!/bin/sh
echo
echo Machines responding on Network Address: 192.168.200.0
nmap -sP 192.168.200.* | grep ".esf" | cut -f2,3 -d' '
echo
Basically it was a code that i would use when i ssh to my linux lab at uni so i could see which machines were up and running.

oh and Tink
Quote:
Originally Posted by Tinkster View Post
Code:
#!/bin/sh
echo
echo Machines responding on Network Address:  192.168.1.0
ping -b -c4 192.168.1.0 2>/dev/null| grep "icmp_seq=1" | cut -f4 -d' ' | cut -f1 -d:
echo
Do you actually get responses? My switch would stop
that kind of non-sense ;}


Cheers,
Tink
No i dont get responses at my house as my switch also blocks out broadcast pings, but the uni lab doesnt.

Last edited by hypercondor; 05-09-2008 at 12:10 AM.
 
  


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