Mdthbs

Why is gun control associated with the socially liberal Democratic party?

Why not make one big CPU core?

Interview was just a one hour panel. Got an offer the next day; do I accept or is this a red flag?

Does WiFi affect the quality of images downloaded from the internet?

My players want to use called-shots on Strahd

What is the color associated with lukewarm?

Fastest path on a snakes and ladders board

Arcane Tradition and Cost Efficiency: Learn spells on level-up, or learn them from scrolls/spellbooks?

My parents claim they cannot pay for my college education; what are my options?

How to address players struggling with simple controls?

What things do I only get a limited opportunity to take photos of?

100-doors puzzle

Is there a risk to write an invitation letter for a stranger to obtain a Czech (Schengen) visa?

Dedicated bike GPS computer over smartphone

Can an open source licence be revoked if it violates employer's IP?

Manager wants to hire me; HR does not. How to proceed?

Threading data on TimeSeries

Boss making me feel guilty for leaving the company at the end of my internship

What did the 8086 (and 8088) do upon encountering an illegal instruction?

Co-worker is now managing my team. Does this mean that I'm being demoted?

...and then she held the gun

Leveling up and Getting Items!

Is fission/fusion to iron the most efficient way to convert mass to energy?

Jam with honey & without pectin has a saucy consistency always

Look Up IPs From Text File, Generate Another Text File With Specific Formatting

Retrieve IPv6 address of website using terminalWhy does nslookup fail for DNS records set to a private address?

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}

0

I'd like a way of looking up all the domains in a text file (one domain per line) and generating another text file with the output as the IP address, a space, the domain name, a space and then the domain name with www. prepending it.

For example, if the source text file contains two lines:

1.gravatar.com

abcya.com

the new text file would contain 3 lines as 1.gravatar.com has both an IPv4 and an IPv6 address:

72.21.91.121 1.gravatar.com www.1.gravatar.com

2a04:fa87:fffe::c000:4902 1.gravatar.com www.1.gravatar.com

104.198.14.52 abcya.com www.abcya.com

I'm running a Ubuntu derivative and can use nslookup to get the IPv4 and IPv6 addresses. However, the source text file is a list of over 2,000 domains - so doing it by hand would take a very long time with plenty of room for error.

And if the answer could allow for no IP address too. If the domain no longer exists (as in the case of alwaysbeready.mybigcommerce.com), nslookup returns
** server can't find alwaysbeready.mybigcommerce.com: NXDOMAIN
So, maybe have NXDOMAIN in place of the IP Address in the resulting text file?

Thanks in advance to anyone who can help.

nslookup

share|improve this question

edited 22 mins ago

Eric Bradshaw

asked 1 hour ago

Eric BradshawEric Bradshaw

133

add a comment | 

0

I'd like a way of looking up all the domains in a text file (one domain per line) and generating another text file with the output as the IP address, a space, the domain name, a space and then the domain name with www. prepending it.

For example, if the source text file contains two lines:

1.gravatar.com

abcya.com

the new text file would contain 3 lines as 1.gravatar.com has both an IPv4 and an IPv6 address:

72.21.91.121 1.gravatar.com www.1.gravatar.com

2a04:fa87:fffe::c000:4902 1.gravatar.com www.1.gravatar.com

104.198.14.52 abcya.com www.abcya.com

I'm running a Ubuntu derivative and can use nslookup to get the IPv4 and IPv6 addresses. However, the source text file is a list of over 2,000 domains - so doing it by hand would take a very long time with plenty of room for error.

And if the answer could allow for no IP address too. If the domain no longer exists (as in the case of alwaysbeready.mybigcommerce.com), nslookup returns
** server can't find alwaysbeready.mybigcommerce.com: NXDOMAIN
So, maybe have NXDOMAIN in place of the IP Address in the resulting text file?

Thanks in advance to anyone who can help.

nslookup

share|improve this question

edited 22 mins ago

Eric Bradshaw

asked 1 hour ago

Eric BradshawEric Bradshaw

133

add a comment | 

I'd like a way of looking up all the domains in a text file (one domain per line) and generating another text file with the output as the IP address, a space, the domain name, a space and then the domain name with www. prepending it.

For example, if the source text file contains two lines:

1.gravatar.com

abcya.com

the new text file would contain 3 lines as 1.gravatar.com has both an IPv4 and an IPv6 address:

72.21.91.121 1.gravatar.com www.1.gravatar.com

2a04:fa87:fffe::c000:4902 1.gravatar.com www.1.gravatar.com

104.198.14.52 abcya.com www.abcya.com

I'm running a Ubuntu derivative and can use nslookup to get the IPv4 and IPv6 addresses. However, the source text file is a list of over 2,000 domains - so doing it by hand would take a very long time with plenty of room for error.

And if the answer could allow for no IP address too. If the domain no longer exists (as in the case of alwaysbeready.mybigcommerce.com), nslookup returns
** server can't find alwaysbeready.mybigcommerce.com: NXDOMAIN
So, maybe have NXDOMAIN in place of the IP Address in the resulting text file?

Thanks in advance to anyone who can help.

nslookup

share|improve this question

edited 22 mins ago

Eric Bradshaw

asked 1 hour ago

Eric BradshawEric Bradshaw

133

1.gravatar.com

abcya.com

72.21.91.121 1.gravatar.com www.1.gravatar.com

2a04:fa87:fffe::c000:4902 1.gravatar.com www.1.gravatar.com

104.198.14.52 abcya.com www.abcya.com

share|improve this question

edited 22 mins ago

Eric Bradshaw

asked 1 hour ago

Eric BradshawEric Bradshaw

133

share|improve this question

edited 22 mins ago

Eric Bradshaw

asked 1 hour ago

Eric BradshawEric Bradshaw

133

asked 1 hour ago

Eric BradshawEric Bradshaw

133

asked 1 hour ago

Eric BradshawEric Bradshaw

133

1 Answer
1

active

oldest

votes

0

A python solution

#!/usr/bin/python3



import socket 

#this module is core networking module in Python, 

#can be used to resolve domain names.



sourcefile = 'sourcefile.txt' #file with domain names

outfile = 'results.txt' #file to write the IP addresses



with open(sourcefile, 'r') as inputf: 

    #This opens the sourcefile in read mode to see what are the domains

    with open(outfile, 'a') as outputf: 

        #This opens the outfile in append mode to write the results

        domains = inputf.readlines() 

        #This reads all the domains in sourcefile line by line

        for domain in domains: 

            #This for loop will go one by one on domains.

            domain = domain.strip("n") 

                #as the every domain in the file are in newline,

                #the socket function will have trouble, so strip off the newline char

            outputf.write(socket.gethostbyname("www."+domain)+" "+domain+ " www."+domain+"n")

                #write function will write the ip and domain to the outputf file we opened.

                #gethostbyname will resolve the domain

share

answered 1 min ago

Vignesh SPVignesh SP

52

add a comment | 

Your Answer

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "106"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f524792%2flook-up-ips-from-text-file-generate-another-text-file-with-specific-formatting%23new-answer', 'question_page');
}
);

Post as a guest

Name

Email

Required, but never shown

0

A python solution

#!/usr/bin/python3



import socket 

#this module is core networking module in Python, 

#can be used to resolve domain names.



sourcefile = 'sourcefile.txt' #file with domain names

outfile = 'results.txt' #file to write the IP addresses



with open(sourcefile, 'r') as inputf: 

    #This opens the sourcefile in read mode to see what are the domains

    with open(outfile, 'a') as outputf: 

        #This opens the outfile in append mode to write the results

        domains = inputf.readlines() 

        #This reads all the domains in sourcefile line by line

        for domain in domains: 

            #This for loop will go one by one on domains.

            domain = domain.strip("n") 

                #as the every domain in the file are in newline,

                #the socket function will have trouble, so strip off the newline char

            outputf.write(socket.gethostbyname("www."+domain)+" "+domain+ " www."+domain+"n")

                #write function will write the ip and domain to the outputf file we opened.

                #gethostbyname will resolve the domain

share

answered 1 min ago

Vignesh SPVignesh SP

52

add a comment | 

0

A python solution

#!/usr/bin/python3



import socket 

#this module is core networking module in Python, 

#can be used to resolve domain names.



sourcefile = 'sourcefile.txt' #file with domain names

outfile = 'results.txt' #file to write the IP addresses



with open(sourcefile, 'r') as inputf: 

    #This opens the sourcefile in read mode to see what are the domains

    with open(outfile, 'a') as outputf: 

        #This opens the outfile in append mode to write the results

        domains = inputf.readlines() 

        #This reads all the domains in sourcefile line by line

        for domain in domains: 

            #This for loop will go one by one on domains.

            domain = domain.strip("n") 

                #as the every domain in the file are in newline,

                #the socket function will have trouble, so strip off the newline char

            outputf.write(socket.gethostbyname("www."+domain)+" "+domain+ " www."+domain+"n")

                #write function will write the ip and domain to the outputf file we opened.

                #gethostbyname will resolve the domain

share

answered 1 min ago

Vignesh SPVignesh SP

52

add a comment | 

A python solution

#!/usr/bin/python3



import socket 

#this module is core networking module in Python, 

#can be used to resolve domain names.



sourcefile = 'sourcefile.txt' #file with domain names

outfile = 'results.txt' #file to write the IP addresses



with open(sourcefile, 'r') as inputf: 

    #This opens the sourcefile in read mode to see what are the domains

    with open(outfile, 'a') as outputf: 

        #This opens the outfile in append mode to write the results

        domains = inputf.readlines() 

        #This reads all the domains in sourcefile line by line

        for domain in domains: 

            #This for loop will go one by one on domains.

            domain = domain.strip("n") 

                #as the every domain in the file are in newline,

                #the socket function will have trouble, so strip off the newline char

            outputf.write(socket.gethostbyname("www."+domain)+" "+domain+ " www."+domain+"n")

                #write function will write the ip and domain to the outputf file we opened.

                #gethostbyname will resolve the domain

share

answered 1 min ago

Vignesh SPVignesh SP

52

#!/usr/bin/python3



import socket 

#this module is core networking module in Python, 

#can be used to resolve domain names.



sourcefile = 'sourcefile.txt' #file with domain names

outfile = 'results.txt' #file to write the IP addresses



with open(sourcefile, 'r') as inputf: 

    #This opens the sourcefile in read mode to see what are the domains

    with open(outfile, 'a') as outputf: 

        #This opens the outfile in append mode to write the results

        domains = inputf.readlines() 

        #This reads all the domains in sourcefile line by line

        for domain in domains: 

            #This for loop will go one by one on domains.

            domain = domain.strip("n") 

                #as the every domain in the file are in newline,

                #the socket function will have trouble, so strip off the newline char

            outputf.write(socket.gethostbyname("www."+domain)+" "+domain+ " www."+domain+"n")

                #write function will write the ip and domain to the outputf file we opened.

                #gethostbyname will resolve the domain

share

answered 1 min ago

Vignesh SPVignesh SP

52

answered 1 min ago

Vignesh SPVignesh SP

52

answered 1 min ago

Vignesh SPVignesh SP

52