Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question?
If it is not in the man pages or the how-to's this is the place! |
Notices |
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
Are you new to LinuxQuestions.org? Visit the following links:
Site Howto |
Site FAQ |
Sitemap |
Register Now
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
|
 |
07-02-2012, 05:59 AM
|
#1
|
Member
Registered: Sep 2011
Posts: 81
Rep: 
|
Script to find the IP from hostname
Hi everyone,
I know that if we give "ping hostname" will give the IP address.
This is good if I have 5 to 6 hosts.If I have hundreds of hosts ping cmd is very painful to do.
So I need script to find all those IP address......Can anyone help me out with this.
Thanks and advance
|
|
|
07-02-2012, 06:16 AM
|
#2
|
Senior Member
Registered: Jan 2010
Location: SI : 45.9531, 15.4894
Distribution: CentOS, OpenNA/Trustix, testing desktop openSuse 12.1 /Cinnamon/KDE4.8
Posts: 1,144
|
HI,
do you have maybe a file with a list of hostnames ?
It would be quickly done like this:
Code:
# vim hostnames_file.txt
google.com
linuxquestions.org
yahoo.com
microsoft.com
then you will "loop" through that file with a script
Code:
vim test-hostnames.sh
#!/bin/bash
while read line; do
# echo "$line"
ping -c 1 "$line"
done < "$1"
and you will run it as:
Code:
# ./test-hostnames.sh hostnames_file.txt
ING google.com (209.85.148.113) 56(84) bytes of data.
64 bytes from fra07s07-in-f113.1e100.net (209.85.148.113): icmp_seq=1 ttl=54 time=30.1 ms
--- google.com ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 30.184/30.184/30.184/0.000 ms
PING linuxquestions.org (75.126.162.205) 56(84) bytes of data.
64 bytes from www.linuxquestions.org (75.126.162.205): icmp_seq=1 ttl=46 time=162 ms
--- linuxquestions.org ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 162.975/162.975/162.975/0.000 ms
PING yahoo.com (209.191.122.70) 56(84) bytes of data.
64 bytes from ir1.fp.vip.mud.yahoo.com (209.191.122.70): icmp_seq=1 ttl=45 time=153 ms
--- yahoo.com ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 153.648/153.648/153.648/0.000 ms
PING microsoft.com (64.4.11.37) 56(84) bytes of data.
--- microsoft.com ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms
good luck
|
|
|
07-02-2012, 06:25 AM
|
#3
|
Member
Registered: Jun 2012
Location: Missouri, USA
Posts: 236
Rep:
|
another way of doing this is as the following:
Code:
# while read domain; do host -t A $domain; done < /tmp/hostnames
google.com has address 74.125.225.33
google.com has address 74.125.225.40
google.com has address 74.125.225.41
google.com has address 74.125.225.38
google.com has address 74.125.225.35
google.com has address 74.125.225.36
google.com has address 74.125.225.32
google.com has address 74.125.225.37
google.com has address 74.125.225.39
google.com has address 74.125.225.46
google.com has address 74.125.225.34
linuxquestions.org has address 75.126.162.205
yahoo.com has address 209.191.122.70
yahoo.com has address 72.30.38.140
yahoo.com has address 98.139.183.24
microsoft.com has address 64.4.11.37
microsoft.com has address 65.55.58.201
|
|
|
07-03-2012, 12:16 AM
|
#4
|
Moderator
Registered: Mar 2008
Posts: 22,293
|
Ping may or may not resolve a hostname. It may not be possible to query a secure system to access it's hostname.
|
|
|
07-03-2012, 03:12 AM
|
#5
|
Senior Member
Registered: Jan 2010
Location: SI : 45.9531, 15.4894
Distribution: CentOS, OpenNA/Trustix, testing desktop openSuse 12.1 /Cinnamon/KDE4.8
Posts: 1,144
|
^^^ totally agree,
nslookup or dig might be better.
|
|
|
All times are GMT -5. The time now is 03:44 AM.
|
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.
|
Latest Threads
LQ News
|
|