bash find duplicate lines in two files

Yeah I thought about that. Shop replaced my chain, bike had less than 400 miles. I want to create a script that will check if the same IP occurs in multiple files and of course print duplicates. It would also be helpful to understand a bit more the motivation for doing this, as someone may have a different approach to solve your problem. Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. UNIX is a registered trademark of The Open Group. Are the files sorted? critical chance, does it have any reason to exist? Note that the comparison in arr uses the entire line from file2 as index to the array, so it will only report exact matches on entire lines. What does that mean? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. bash Has a bill ever failed a house of Congress unanimously? rev2023.7.7.43526. Unix, Find common lines between two files and also their line number, find non-matching lines of two files bash, Want to find the distinct lines between two files. BASH - Tell if duplicate lines exist (y/n) Ask Question Asked 9 years, 3 months ago Modified 9 years, 3 months ago Viewed 7k times 6 I am writing a script to manipulate a text file. Can Visa, Mastercard credit/debit cards be used to receive online payments? a kind of diff. BASH: find duplicate files (MAC/LINUX compatible) Ask Question Asked 12 years, 3 months ago Modified 6 months ago Viewed 11k times 8 I am looking for a bash script which is compatible with Mac, to find duplicate files in a directory. You could do this (if no files have a tab caracter in their names): The recursive grep will output each line prefixed by the filename it is in. Printing in one line the common text using comm cmd? Finally uniq outputs just the duplicated lines, skipping the first field. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. rev2023.7.7.43526. File 1 /home/anybody/proj1/hello.h /home/anybody/proj1/engine.h /home/anybody/proj1/car.h /home/anybody/proj1/tree.h /home/anybody/proj1/sun.h File 2 You're more likely to get some points for that, Why on earth are people paying for digital real estate? 15amp 120v adaptor plug for old 6-20 250v receptacle? Finding common lines in two files that have some blank lines. How can I copy and paste text lines across different files in a bash script? bash Thanks for contributing an answer to Stack Overflow! Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing. duplicate lines In case anybody wants to do the same thing based on a certain column but doesn't know awk, just replace both $0's with $5's for example for column 5 so you get lines shared in 2 files with same words in column 5, @ChristopherSchultz: It's possible to upgrade this answer to work better using POSIX, You're right, but this is essentially repeating another. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. How can I learn wizard spells as a warlock without multiclassing? Is speaking the country's language fluently regarded favorably when applying for a Schengen visa? Can the Secret Service arrest someone who uses an illegal drug inside of the White House? BOTH lines of a duplicate pair in a text file Who was the intended audience for Dora and the Lost City of Gold? As long as you're interested in the last column, you can do it with sort and uniq: Here, the sort option -k3n causes the file to be sorted starting with the third field, in numeric order; the options to uniq are: Unfortunately, you cannot control the number of fields to be checked for uniqueness. to get the duplicated lines written to the file dupes.txt. BASH What is the reasoning behind the USA criticizing countries and then paying them diplomatic visits? If thats what youre trying to accomplish (freeing space that would otherwise be in use). My understanding is that there is only a single IP in the file. This is what the comm utility is for. Line It will take all the files present in the current working directory and will make an all-vs-all comparison leaving in the "matching_lines" file the result. linux Is there any potential negative effect of adding something to the PATH variable that is not yet installed on the system? PD: I tried this command and it didn't work for me. Linux is a registered trademark of Linus Torvalds. Note: You can use grep -F instead of fgrep. Connect and share knowledge within a single location that is structured and easy to search. can you add expected output separately for clarity? In other words, the difference between all the files concatenated and sorted, and all the files concatenated, sorted, and then the duplicates removed. The pattern of the duplicated lines is not predictable. To easily apply the comm command to unsorted files, use Bash's process substitution: So the files abc and def have one line in common, the one with "132". A+B and AB are nilpotent matrices, are A and B nilpotent? Thanks. One of the probably easiest from an administrative view is just using a file system that utilizes deduplication. Then you sort based on all the fields but the first one. Why is GREP outputting BINARY FILES rather than a SINGLE FILE named 0.jpg? Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. mainfolder | sort -k 2 | uniq -D -f 1 The recursive grep will output each line prefixed by the filename it is in. They were looking to identify a word like, None of that finds just repeated words as in. It only takes a minute to sign up. To learn more, see our tips on writing great answers. What is the significance of Headband of Intellect et al setting the stat to 19? Then I want to output all duplicate words. How can I troubleshoot an iptables rule that is preventing internet access from my server? From man fdupes: Searches the given path for duplicate files. (Ep. Doing a find-and-replace between two strings, across multiple lines, Replace anything between parentheses even if spanning multiple lines, Delete all but multiple lines across multiple files, Remove duplicate lines from files recursively in place but leave one - make lines unique across files, what is meaning of thoroughly in "here is the thoroughly revised and updated, and long-anticipated". In the movie Looper, why do assassins in the future use inaccurate weapons such as blunderbuss? For these cases, I would recommend the following two-pass approach: Note that this relies on your wanting to filter by the last column. Thank you. I have two files and I would like to display the duplicate line. For each line ($0) take the second field ($2) separated by '= ' and use this field as a key to a hash 'a' to count occurrences of this field, also use this field as the first dimension key for a two-dimensional hash 'd', and the value of hash 'a' referenced by this field as the second dimension key to store the value of the current line ($). I found this command used to find duplicated files but it was quite long and made me confused. The neuroscientist says "Baby approved!" $ uniq linux-distributions.txt. What would stop a large spaceship from looking like a flying brick? Why was that? Finally uniq outputs just the duplicated lines, skipping the first field. What would stop a large spaceship from looking like a flying brick? UNIX is a registered trademark of The Open Group. Is speaking the country's language fluently regarded favorably when applying for a Schengen visa? Encountered during parsing. linux Identify duplicate lines in a file (Ep. The file name and the line now are yellow (\033[0;33m) to distinguish from the text in the actual line in case of multiline (excuse the word-pun) duplicates. Does being overturned on appeal have consequences for the careers of trial judges? 587), The Overflow #185: The hardest part of software is requirements, Starting the Prompt Design Site: A New Home in our Stack Exchange Neighborhood, Temporary policy: Generative AI (e.g., ChatGPT) is banned, Testing native, sponsored banner ads on Stack Overflow (starting July 6). Will just the increase in height of water column increase pressure or does mass play any role in it? This is very clever. How to count duplicated last columns without removing them? For example, if I remove -printf "%s\n", nothing came out. Do I have the right to limit a background check? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. How much space did the 68000 registers take up? Web13 Answers Sorted by: 129 fdupes can do this. For GNU programs, they are much more detailed than their man-pages. In example, the word "Welcome" should not be in desired output if it was on line 6 instead of line 5 in f2.txt. Another simple way to use awk is with a for loop statement to repeat the printing process.. Lets duplicate each line three times: $ awk '{ for (i = 1; i <= 3; i++) print }' xfile. to find duplicate lines across 2 different files The pattern of the duplicated lines is not predictable. It also has an issue that it matches the ending word boundary with the starting one. There are tons of things..like what happens if the IP can be expanded in one place and compressed at other place..Shall that be matched? BASH - Find duplicates in multiple files when i want to find duplicate lines between two files i use this command. is the correct answer. Then I want to output all duplicate words. Can the Secret Service arrest someone who uses an illegal drug inside of the White House? Shell command to find lines common in two files Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing. Is religious confession legally privileged? How should I select appropriate capacitors to ensure compliance with IEC/EN 61000-4-2:2009 and IEC/EN 61000-4-5:2014 standards for my device? Duplicate by ID or by the whole line? What is the significance of Headband of Intellect et al setting the stat to 19? What does "Splitting the throttles" mean? While the other answer is more precise, the benefit of mine I think is that for someone who wants for a quick solution will only have 2 lines to read. There are solutions using temporary files if you don't have bash 4.x and 'process substitution'. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Find centralized, trusted content and collaborate around the technologies you use most. One of the common uses of the uniq command is to remove the adjacent duplicate lines from the text file as shown. There is only 'h' (single quotes). The find command looks in two folders for files, prints file name only (stripping leading directories) and size, sort and show only dupes. Thank you. linux Do United same day changes apply for travel starting on different airlines? Related. Learn more about Stack Overflow the company, and our products. Then I want to output all duplicate words. The find command looks in two folders for files, prints file name only (stripping leading directories) and size, sort and show only dupes. Could you clarify if you only want to find matching values in different files or also duplicate entries in the same files? Web13 Answers Sorted by: 129 fdupes can do this. I tried this but it doesn't work : cat id1.txt | while read id; do grep "$id" id2.txt; done. How to combine multiple text files into one text file ordered by date created? and getting output: Green This is. Is it possible to print repeated words that are not unique and spanning across multiple lines? Bash: Loop though multiple files and print each line from each file and write to a different file, concatenate all the text files in all the sub folders into one giant text file, finding the closest value from another file with awk. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Asking for help, clarification, or responding to other answers. 587), The Overflow #185: The hardest part of software is requirements, Starting the Prompt Design Site: A New Home in our Stack Exchange Neighborhood, Fast elimination of duplicate lines across multiple files. Both of my 2 files contain list of ids. rev2023.7.7.43526. file1: http://pastebin.com/taRcegVn file2: http://pastebin.com/2fXeMrHQ And the output should output the lines that appears in both files. I am looking for a shorter way than writing a complete bash program. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Identify duplicate lines in a file Do you need an "Any" type when implementing a statically typed programming language? duplicate lines Description: I want to compare two txt files, line by line. Spying on a smartphone remotely by the authorities: feasibility and operation. Connect and share knowledge within a single location that is structured and easy to search. Why add an increment/decrement operator when compound assignnments exist? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Who was the intended audience for Dora and the Lost City of Gold? Is there any potential negative effect of adding something to the PATH variable that is not yet installed on the system? either way works. 587), The Overflow #185: The hardest part of software is requirements, Starting the Prompt Design Site: A New Home in our Stack Exchange Neighborhood, Temporary policy: Generative AI (e.g., ChatGPT) is banned, Testing native, sponsored banner ads on Stack Overflow (starting July 6), compare two files and get the output for the same lines, How to find duplicate lines across 2 different files? This does assume there are no newlines in the file names. duplicate lines Is there a legal way for a country to gain territory from another through a referendum? file1). First file: a.txt aa bb cc f 'f' "g" 'h' Second file: b.txt cc dd 'f' "g" g h Command: cat a.txt | xargs -I {} grep -w {} b.txt Return: cc 'f' 'f' "g" g <- it shouldn't be there h <- it shouldn't be there Expected: cc 'f' "g" In my case last item (h) shouldn't be listed because this item doesn't exist in a.txt file. Shop replaced my chain, bike had less than 400 miles, How to play the "Ped" symbol when there's no corresponding release symbol. In Debian or 3 You could do this (if no files have a tab caracter in their names): grep -T -r . Encountered during parsing. bash What is the number of ways to spell French word chrysanthme ? when doing comm -12 a.txt b.txt. bash text-processing Share I then played around a little to make it visually more comfortable Like this: In this last view everything is more "human" and the duplicates are grouped together first by result and then by file (you can see that the results in a.txt are all together), so it's easier to understand.. 0. Then you sort based on all the fields but the first one. Connect and share knowledge within a single location that is structured and easy to search.
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