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Removing duplicate IP's from a list with no concern of variables after them



2019 Community Moderator ElectionRegex to find/remove duplicate linePowerShell: Import-CSV with no headers and remove partial duplicate linesRemoving duplicate rows from Notepad++Linux Bash commands to remove duplicates from a CSV fileRemove duplicate keys (and their values) from a dictionary PYTHONRemove duplicate line only contain specific stringRemove duplicates from csv and count them in JavaPython remove duplicates from the list?Removes duplicate lines from files recursivelyremove duplicate from list and check if IP's from one list in another list










-1















I have this kind of list (csv):



100.100.100.1,"10","2019-02-12 16:20:23"
100.100.100.1,"10","2019-02-12 16:20:28"
100.100.100.2,"10","2019-02-12 16:20:26"
100.100.100.2,"10","2019-02-12 16:20:27"


So I Would like to know the best solution with RegExp to remove duplicate IP's from a list (by removing whole line). Values after IP should have no importance. First occurrence of IP might as well be the one that stays.



So the output should be:



100.100.100.1,"10","2019-02-12 16:20:23"
100.100.100.2,"10","2019-02-12 16:20:26"


I am using Notepad++










share|improve this question

















  • 1





    Welcome to Stack Overflow. Check the Stack Overflow's help on asking questions first, please. Focus on What topics can I ask about here, What types of questions should I avoid asking?, How to ask a good question, How to create a Minimal, Complete, and Verifiable example and Stack Overflow question checklist.

    – Dawid Ferenczy
    Mar 6 at 23:25















-1















I have this kind of list (csv):



100.100.100.1,"10","2019-02-12 16:20:23"
100.100.100.1,"10","2019-02-12 16:20:28"
100.100.100.2,"10","2019-02-12 16:20:26"
100.100.100.2,"10","2019-02-12 16:20:27"


So I Would like to know the best solution with RegExp to remove duplicate IP's from a list (by removing whole line). Values after IP should have no importance. First occurrence of IP might as well be the one that stays.



So the output should be:



100.100.100.1,"10","2019-02-12 16:20:23"
100.100.100.2,"10","2019-02-12 16:20:26"


I am using Notepad++










share|improve this question

















  • 1





    Welcome to Stack Overflow. Check the Stack Overflow's help on asking questions first, please. Focus on What topics can I ask about here, What types of questions should I avoid asking?, How to ask a good question, How to create a Minimal, Complete, and Verifiable example and Stack Overflow question checklist.

    – Dawid Ferenczy
    Mar 6 at 23:25













-1












-1








-1


1






I have this kind of list (csv):



100.100.100.1,"10","2019-02-12 16:20:23"
100.100.100.1,"10","2019-02-12 16:20:28"
100.100.100.2,"10","2019-02-12 16:20:26"
100.100.100.2,"10","2019-02-12 16:20:27"


So I Would like to know the best solution with RegExp to remove duplicate IP's from a list (by removing whole line). Values after IP should have no importance. First occurrence of IP might as well be the one that stays.



So the output should be:



100.100.100.1,"10","2019-02-12 16:20:23"
100.100.100.2,"10","2019-02-12 16:20:26"


I am using Notepad++










share|improve this question














I have this kind of list (csv):



100.100.100.1,"10","2019-02-12 16:20:23"
100.100.100.1,"10","2019-02-12 16:20:28"
100.100.100.2,"10","2019-02-12 16:20:26"
100.100.100.2,"10","2019-02-12 16:20:27"


So I Would like to know the best solution with RegExp to remove duplicate IP's from a list (by removing whole line). Values after IP should have no importance. First occurrence of IP might as well be the one that stays.



So the output should be:



100.100.100.1,"10","2019-02-12 16:20:23"
100.100.100.2,"10","2019-02-12 16:20:26"


I am using Notepad++







regex csv






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 6 at 23:07









kodebugkodebug

21




21







  • 1





    Welcome to Stack Overflow. Check the Stack Overflow's help on asking questions first, please. Focus on What topics can I ask about here, What types of questions should I avoid asking?, How to ask a good question, How to create a Minimal, Complete, and Verifiable example and Stack Overflow question checklist.

    – Dawid Ferenczy
    Mar 6 at 23:25












  • 1





    Welcome to Stack Overflow. Check the Stack Overflow's help on asking questions first, please. Focus on What topics can I ask about here, What types of questions should I avoid asking?, How to ask a good question, How to create a Minimal, Complete, and Verifiable example and Stack Overflow question checklist.

    – Dawid Ferenczy
    Mar 6 at 23:25







1




1





Welcome to Stack Overflow. Check the Stack Overflow's help on asking questions first, please. Focus on What topics can I ask about here, What types of questions should I avoid asking?, How to ask a good question, How to create a Minimal, Complete, and Verifiable example and Stack Overflow question checklist.

– Dawid Ferenczy
Mar 6 at 23:25





Welcome to Stack Overflow. Check the Stack Overflow's help on asking questions first, please. Focus on What topics can I ask about here, What types of questions should I avoid asking?, How to ask a good question, How to create a Minimal, Complete, and Verifiable example and Stack Overflow question checklist.

– Dawid Ferenczy
Mar 6 at 23:25












1 Answer
1






active

oldest

votes


















0














You can search with the following regex with the ". matches newline" option checked:



^(([^,]+).*?)^2,[^n]*(n|$)


and replace the matches with:



$1


Demo: https://regex101.com/r/j91kjJ/1






share|improve this answer























  • This only works if the appearances are consecutive, not if they are mixed up. I don't see any possibility to remove duplicates that are not consecutive in Notepad++.

    – csabinho
    Mar 7 at 0:11











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









0














You can search with the following regex with the ". matches newline" option checked:



^(([^,]+).*?)^2,[^n]*(n|$)


and replace the matches with:



$1


Demo: https://regex101.com/r/j91kjJ/1






share|improve this answer























  • This only works if the appearances are consecutive, not if they are mixed up. I don't see any possibility to remove duplicates that are not consecutive in Notepad++.

    – csabinho
    Mar 7 at 0:11
















0














You can search with the following regex with the ". matches newline" option checked:



^(([^,]+).*?)^2,[^n]*(n|$)


and replace the matches with:



$1


Demo: https://regex101.com/r/j91kjJ/1






share|improve this answer























  • This only works if the appearances are consecutive, not if they are mixed up. I don't see any possibility to remove duplicates that are not consecutive in Notepad++.

    – csabinho
    Mar 7 at 0:11














0












0








0







You can search with the following regex with the ". matches newline" option checked:



^(([^,]+).*?)^2,[^n]*(n|$)


and replace the matches with:



$1


Demo: https://regex101.com/r/j91kjJ/1






share|improve this answer













You can search with the following regex with the ". matches newline" option checked:



^(([^,]+).*?)^2,[^n]*(n|$)


and replace the matches with:



$1


Demo: https://regex101.com/r/j91kjJ/1







share|improve this answer












share|improve this answer



share|improve this answer










answered Mar 6 at 23:22









blhsingblhsing

39.3k41743




39.3k41743












  • This only works if the appearances are consecutive, not if they are mixed up. I don't see any possibility to remove duplicates that are not consecutive in Notepad++.

    – csabinho
    Mar 7 at 0:11


















  • This only works if the appearances are consecutive, not if they are mixed up. I don't see any possibility to remove duplicates that are not consecutive in Notepad++.

    – csabinho
    Mar 7 at 0:11

















This only works if the appearances are consecutive, not if they are mixed up. I don't see any possibility to remove duplicates that are not consecutive in Notepad++.

– csabinho
Mar 7 at 0:11






This only works if the appearances are consecutive, not if they are mixed up. I don't see any possibility to remove duplicates that are not consecutive in Notepad++.

– csabinho
Mar 7 at 0:11




















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