How to read large text file on windows

Question

I have a large server log file   750 MB  which I can t open with either Notepad or Notepad    they both say the file is too large    Can anyone suggest a program  for Windows  that will only read a small part of the file into memory at a time   Or do I need to write my own app to parse this file

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GnuUtils for Windows make this easy as well  In that package are standard UNIX utils like cat  ls and more  I am using cat filename   more to page through a huge file that Notepad   can t open at all

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You should try TextPad  it can read a file of that size   It s free to evaluate  you can evaluate indefinitely

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use EmEditor  it s pretty good  i used it to open a file with more than 500mb

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I have been using the BareTail for quite some time for viewing large logs  some GBs  and it is working very well is very fast  There is a free version and a commercial Pro version   They say that it has   Real-time file Optimised real-time viewing engine View files of any size    2GB  Scroll to any point in the whole file instantly View files over a network Configurable line wrapping Configurable TAB expansion  Configurable font  including spacing and offset to maximise use of screen space   Another alternative is Far Manager  Viewing a several GBs file is no problem  little memory footprint   but attempting to open the text file in the Editing mode might take several GBs of RAM  so be aware of that  I am not aware of the file size limit that can be viewed edited in Far

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I hate to promote my own stuff  well  not really   but PowerPad can open very large files   Otherwise  I d recommend a hex editor

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While Large Text File Viewer works great for just looking at a large file  and is free    if the file is either a delimited or fixed-width file  then you should check out File Query   Not only can it open a file of any size  I have personally opened a 280GB file  but it can go larger   but it lets you query the file as though it was in a database as well  finding out any sort of information you could want from it   It is not free though  so it is more for people that work with large files a lot  but if you have a one-off problem  you can just use the 30-day trial for free

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I just used less on top of Cygwin to read a 3GB file  though I ended up using grep to find what I needed in it    less is more  but better    See this answer for more details on less  https   stackoverflow com a 1343576 1005039

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The integrated Text-Viewer of Total Commander can open huge files   10GB  for viewing without any problems  It also provides different views  e g  a Hex-View

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If all you need is a tool for reading  then this thing will open the file instantly http   www readfileonline com

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if you can code  write a console app  here is the c  equivalent of what you re after  you can do what you want with the results  split  execute etc    SqlCommand command   null  try       using  var connection   new SqlConnection  XXXX                  command   new SqlCommand            command Connection   connection          if  command Connection State    ConnectionState Closed  command Connection Open               Create an instance of StreamReader to read from a file             The using statement also closes the StreamReader          using  StreamReader sr   new StreamReader  C   test txt                          String line                 Read and display lines from the file until the end of                 the file is reached              while   line   sr ReadLine       null                                Console WriteLine line                   command CommandText   line                  command ExecuteNonQuery                    Console Write   - DONE                                    catch  Exception e           Let the user know what went wrong      Console WriteLine  The file could not be read         Console WriteLine e Message     finally       if  command Connection State    ConnectionState Open  command Connection Close

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Definitely EditPad Lite    It s extremely fast not just while opening files  but also functions like  Replace All   trimming of leading trailing whitespaces or converting content to lowercase are very fast   And it is also very similar to Notepad

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try this     Large Text File Viewer  By the way  it is free     But  I think you should ask this on serverfault com instead

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UltraEdit will do the trick

[text-files] How to read large text file on windows?

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