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I am looking for a program that can find the longest line of a .txt file. It should run on Microsoft Windows. Any license or price is fine.

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  • How many characters shall a tab count? Just 1, 4 or 8 or customizable? Commented Jan 23, 2017 at 10:18
  • @Walmart - I think that your answers above should be put into an answer rather than left as comments. Commented Jan 23, 2017 at 16:27

2 Answers 2

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I am looking for a program that can find the longest line of a .txt file. It should run on Microsoft Windows.

I've listed two FREE solutions below that may suffice for your need.

Method 1

You could use: wc -L "c:\folder\file.txt" from the CoreUtils for Windows for example if you just need the number of the length of the longest line in that file. This would be a freebie too by the way.


Method 2

You can do this in Windows with PowerShell as well for a particular file:

  1. Get the maximum length number of a record in a file:

    GC "c:\folder\file.txt" | Measure -Property length -Maximum | Select Maximum

  2. Get the content of the longest line/record in a file

    GC "c:\folder\file.txt" | Sort -Property length | Select -last 1


Further Resources

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    I would like to mention that if the file contains CTL language scripts like Devanagari, then use following command: GC "c:\folder\file.txt" -Encoding UTF8 | Sort -Property length | Select -last 1
    – ePandit
    Commented Sep 30, 2017 at 16:27
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You can add an extension to Notepad++ to perform this operation. See this answer on SuperUser for details

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