topic Re: shell script - ping list of hostname in Operating System - HP-UX

shell script - ping list of hostname

Nik — Tue, 07 Nov 2000 15:23:36 GMT

-- HPUX 10.20 --
I have a list of hostnames in a text file (1 host to each line) and I would like some help on writing a script that could ping each of these hostnames and report back which hosts did not respond?
Sorry, but so far I have no idea how to start this... So I thought I'd post this as I browse through Essential SysAdm for any tips... thanks people!

Re: shell script - ping list of hostname

Tony Constantine_1 — Tue, 07 Nov 2000 15:30:34 GMT

could try

for HOSTNAME in hosta hostb hostc hostd
do
ping $HOSTNAME -n 1
done

Re: shell script - ping list of hostname

Rainer_1 — Tue, 07 Nov 2000 15:31:16 GMT

Here my little script
#!/bin/sh

LANG=C
HOSTNAME_FILE=..... # insert here your file
for host in $(cat $HOSTNAME_FILE)
do
ping $host -n 1 | grep -q '1 packets received'
if [ $? = 0 ]
then
echo "$host: OK"
else
echo "$host: FAIL"
fi
done

Re: shell script - ping list of hostname

Tony Constantine_1 — Tue, 07 Nov 2000 15:32:41 GMT

Sorry if there in a text file it will be

for HOSTNAME in `more /tmp/hostname.txt`
do
ping $HOSTNAME -n 1
done

Re: shell script - ping list of hostname

Devbinder Singh Marway — Tue, 07 Nov 2000 15:35:17 GMT

you can do something like this :-

for i in ` cat (your file with hosts) `
do
ping $i -n 1 | grep -q "100%"
if [[ $? = 0 ]]
then
print " network $i not reachable"
fi
done

HTH

Re: shell script - ping list of hostname

Patrick Wallek — Tue, 07 Nov 2000 15:35:47 GMT

What I have done in the past is this:

script

ping host1 64 5
ping host2 64 5
ping host3 64 5

I then run the script and redirect stderr and stdout to a file and then go look at the file to determine what responded and what didn't.

to run the script:

./script > script.out 2>&1

Re: shell script - ping list of hostname

Nik — Tue, 07 Nov 2000 15:39:44 GMT

wow! that's fantastic!
thanks to everyone...

Re: shell script - ping list of hostname

Patrick Wallek — Tue, 07 Nov 2000 15:42:17 GMT

Points are much appreciated as well.

Re: shell script - ping list of hostname

James R. Ferguson — Tue, 07 Nov 2000 15:44:41 GMT

Hi:

#!/usr/bin/sh
while read HOST
do
ping $HOST -n 3
done < /tmp/ping.lst

...JRF...

Re: shell script - ping list of hostname

Rob Smith — Tue, 07 Nov 2000 21:21:58 GMT

Try this:

#!/usr/bin/sh
##
###
####
#####
for x in `cat /etc/hosts | awk ' $1 !~ /^#/ { print $1 } '`
do
ping $x -n 5

if [ $? -ne 0 ]
then
grep $x /etc/hosts
fi
done

Re: shell script - ping list of hostname

Alan Riggs — Tue, 07 Nov 2000 22:46:35 GMT

One note of caution: at 10.20, at least, ping returns 0 whether the packet has been lost or not. Testing for $? is not a valid way to determine whether connectivity exists. Here is a solution I have used in the past:

PING=`ping $SERVER -n 1|grep %| awk '{print $7}'`
if [ ${PING%%} = 0 ]
then
echo ping test succeeded
else
echo ping test failed
fi

Re: shell script - ping list of hostname

RuudPeters — Wed, 08 Nov 2000 10:45:22 GMT

Hi NIK,

You might want to have a look at the perl script DOWNTIME. Visit WWW.FRESHMEAT.NET for the exact URL. This script does exactly that what you need.

Good luck !