05-10-2010
Are you, perhaps, under the assumption that 'ping' is a shell script? If so, we have to disappoint you, as it's a binary program with widely different code across OS', probably written in C on most.
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1. Shell Programming and Scripting
Dear all,
This is the Bionic Fysh again. I have two quick questions:
1- when writing shell scripts, how does one allow the tilda ~ into the script ?
e.g
ls ~;
ls ~me;
user=you;
ls ~$user (N.B I think that for this one you need: ls `~$user`)
2- In FreeBSD 4.0, I would like for a... (6 Replies)
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2. Shell Programming and Scripting
Hi
Can someone give me a shell script that can ping a range of IPs and return IPs which are not pingable.
Range for example say 192.168.0.1 to 192.168.0.50 and whichever are not pingable then return the IP.
Thanks for your help (3 Replies)
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3. Shell Programming and Scripting
I woul like to create a script in order to make a ping to a server and save in a variable a 1 if respond or a 0 if it doesnt. Then with that I could make a graffic of the server, for how long it is up.:b:
So far I have this:
if ;
then
#if the ip respond the ping shows online
echo... (3 Replies)
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4. Shell Programming and Scripting
Hi,
I need to ping all the systems in my network and then create a log for the ones, from where I successfully get the ping-response (ICMP packet).
Now, I've used the ping command successfully, but am unable to use 'grep' command to locate the IPs for which the ping was successful (so that I... (5 Replies)
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5. Shell Programming and Scripting
Hi,
I develop simple animation ping script on Solaris Platform. It is like Cisco ping.
Examples and source code are below.
bash-3.00$ gokcell 152.155.180.8 30
Sending 30 Ping Packets to 152.155.180.8
!!!!!!!!!!!!!.!!!!!!!!!!!!!!!.
% 93.33 success... % 6.66 packet loss...... (1 Reply)
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6. Shell Programming and Scripting
HI,
I have a file serverlist in that all host names are placed.
i have written a small script
#./testping
#! /bin/bash
for i in `cat serverlist`
do
ping $i >> output.txt
done
so now it creates a file output.txt till here fine..
now each time i run this script the output file... (4 Replies)
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7. Shell Programming and Scripting
Hi friends,
i have a file contains IP address like below
cat file.txt
10.223.20.1
10.223.20.2
10.223.20.3
10.223.20.4
10.223.10.5
.
.
.
like this
Now i want to make a script which gives output whether each ip is pinging or not...
the result will be like this
10.223.20.1 up... (9 Replies)
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8. Shell Programming and Scripting
Hi Team,
Need shell script to Telnet multiple node , Ping some IP and print output like pass or fail.
Need this script to check reachability of multiple nodes at same time.
Help me.
I use this but not working...
Eg.
in this script i need to telnet... (4 Replies)
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9. Programming
help with bash script!
im am working on this script to make sure my server will stay online, so i made this script..
HOSTS="192.168.138.155"
COUNT=4
pingtest(){
for myhost in "$@"
do
ping -c "$COUNT" "$myhost" &&return 1
done
return 0
}
if pingtest $HOSTS
#100% failed... (4 Replies)
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10. Shell Programming and Scripting
Hi
I did the following script to ping multiple servers, but I keep on receiveing duplicate emails for one server that is down:
#!/bin/bash
date
cat /var/tmp/servers.list | while read output
do
ping -c 1 "$output" > /dev/null
if ; then
echo "node $output is up"
else
... (10 Replies)
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LEARN ABOUT CENTOS
shlock
SHLOCK(1) General Commands Manual SHLOCK(1)
NAME
shlock - create lock files for use in shell scripts
SYNOPSIS
shlock -p pid -f name [ -b ] [ -u ] [ -c ]
DESCRIPTION
Shlock tries to create a lock file named name and write the process ID pid into it. If the file already exists, shlock will read the
process ID from the file and test to see if the process is currently running. If the process exists, then the file will not be created.
Shlock exits with a zero status if it was able to create the lock file, or non-zero if the file refers to currently-active process.
OPTIONS
-b Process IDs are normally read and written in ASCII. If the ``-b'' flag is used, then they will be written as a binary int. For
compatibility with other systems, the ``-u'' flag is accepted as a synonym for ``-b'' since binary locks are used by many UUCP pack-
ages.
-c If the ``-c'' flag is used, then shlock will not create a lock file, but will instead use the file to see if the lock is held by
another program. If the lock is valid, the program will exit with a non-zero status; if the lock is not valid (i.e., invoking
shlock without the flag would have succeeded), then the program will exit with a zero status.
EXAMPLES
The following example shows how shlock would be used within a shell script:
LOCK=/var/run/innd/LOCK.send
trap 'rm -f ${LOCK} ; exit 1' 1 2 3 15
if shlock -p $$ -f ${LOCK} ; then
# Do appropriate work
else
echo Locked by `cat ${LOCK}`
fi
HISTORY
Written by Rich $alz <rsalz@uunet.uu.net> after a description of HDB UUCP locking given by Peter Honeyman. This is revision 1.9, dated
1996/10/29.
SHLOCK(1)