Active1 year, 9 months ago
I'd go with a string hash. Read a line, hash it, and store a counter and the first copy of the string as the value in the hash bucket. At the end you just iterate through the hash, print the string and the value. Find and delete duplicates! Dupli Find is an automation utility that searches duplicate lines in text files and Word documents, and duplicate rows/cells in Excel spreadsheets. Found duplicates are presented visually and can easily be removed from the source with a minumim of work required.
Check For Duplicate Files On Computer
I have searching around, but not able to get some auto script that perform overall tasks below:1) go through all text files from a folder
2) remove duplicate line/row from the text file (text is already sorted, so can skip the sorting part)
Duplicate files are a waste of disk space, consuming that precious SSD space on a modern Mac and cluttering your Time Machine backups.Remove them to free up space on your Mac. There are many polished Mac apps for this — but they’re mostly paid software. The following complete code helps you to find and print duplicate words or lines in a File. Also helps you to find duplicate words in a Line of text. In the below code, java.util.Scanner class is used to read words or lines from a file and also used to read words from a line. Duplicate words or lines are detected using HashMap. The words or lines are stored as a key in the hashmap. Finally hashmap contains unique words or lines. How it works with a duplicate file finder app. There’s a ton of duplicate finder tools out there, but we’ll take Gemini 2 as an example, because we’re 100% sure it works. So, let’s say you want to scan all folders on your Mac for duplicates.
3) save & overwrite the text files
Unfortunately, all the result I searched only to remove line from 1 specific file, and save as another file name.
Then i will set a schedule task to run this script.
I don't have any script knowledge, only have few experience on batch script setup. Your help and guide would be much appreciated.
ericjeehoericjeeho
2 Answers
Unfortunately, all the result I searched only to remove line from 1 specific file, and save as another file name.
I think you have your answer right here. I don't know which language you're writing in, but typically in this scenario I would do something as such.
- Open file A
- Read lines
- Sort lines
- Remove duplicate lines
- Save as file B
- Close file A
- Rename file A to _backup or _original (unnecessary, but a good safe guard for data loss prevention)
- Rename file B to file A
Again I don't know which language you're writing in etc... there really isn't enough detail here to answer the question any further.
The key point though is to simply delete your original file, and rename your new file to the original.
SlackerSlacker
I wrote and commented a little script in GoLang for you It might help in your case if you know how to run it. If not, quick research will help you.
Your file:
hello hello yes no
Returned result: hello yes no
if you run this program in the directory with all your files, it'll remove the duplicates.
Hope it fits your needs.
NoyNoy
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