Question

Remove duplicate lines from text file using vbscript?

Asked by: dion_p1

Remove Duplicate Lines From Text File.

How can i remove duplicate lines from text file?
The format of the file is as follows

flipper.berkeley.edu
flipper.berkeley.edu
ftp.aao.gov.au
ftp.deet.gov.au
ftp.deet.gov.au
ftp.deetya.gov.au
ftp.deetya.gov.au
ftp.ece.jcu.edu.au
ftp.eng.jcu.edu.au
ftp.hq.nasa.gov

I am using VBS Script

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Asked On
2007-03-21 at 03:36:51ID22462672
Tags

file

,

text

,

vbscript

,

duplicate

,

remove

Topic

VB Script

Participating Experts
3
Points
500
Comments
5

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Answers

 

by: sirbountyPosted on 2007-03-21 at 04:15:07ID: 18762947

Try this...

'SortIt.vbs
strFile="C:\YourFile.txt"
Dim objFSO: Set objFSO = CreateObject("Scripting.FileSystemObject")
Dim objFile: Set objFile = objFSO.OpenTextFile(strFile)
Dim dicSort: Set dicSort = CreateObject("Scripting.Dictionary")

Do While Not objFile.AtEndOfStream
    On Error Resume Next
    strData = objFile.ReadLine
    dicSort.Add strData, dicSort.Count
Loop

objFile.Close
Set objFile = objFSO.CreateTextFile(strFile)
For Each Item In dicSort
  objFile.WriteLine Item
Next
objFile.Close
Set objFile = Nothing
Set objFSO=Nothing

 

by: samopalPosted on 2007-03-21 at 14:44:54ID: 18767582

  set cnCSV = CreateObject("ADODB.Connection")
   cnCSV.ConnectionString = "Driver={Microsoft Text Driver (*.txt; *.csv)};Initial Catalog=."
   cnCSV.Open
   cnCSV.Execute "SELECT distinct * INTO OUT.txt FROM IN.txt"
   cnCSV.Close
   Set cnCSV = Nothing

 

by: Simon336697Posted on 2009-10-08 at 21:30:20ID: 25532303

Hi guys, hi Sir Bounty.
Sir Bounty, Im trying to following what you have done. Is it possible to clarify for me the following?

1) You create a dictionary object
2) You then read into the dictionary each line of the text file
What im not getting is, are you writing in every duplicate line into the dictionary object?

Any help clarifying much appreciated mate.

 

by: sirbountyPosted on 2009-10-09 at 06:12:31ID: 25534576

Well Simon - this is quite old! :^)
But reading over the code above, it will error with duplicates - a dictionary won't allow duplicate indexes - which is why the 'on error' line (so any duplicates will simply be skipped).

 

by: Simon336697Posted on 2009-10-10 at 01:47:40ID: 25541432

Hi Sirbounty,
As usual, you're everywhere and always in a good way.
Thanks for clearing that up.
Take care :>)

20120131-EE-VQP-002

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