Batch / Find And Edit Lines in TXT file

Question

I want to create a batch while which finds specific lines in a batch file and are able to edit these lines.

Example:

//TXT FILE//

ex1 ex2 ex3 ex4 

i want to let the batch file find 'ex3' and edit this to 'ex5' to let it look like this:

ex1 ex2 ex5 ex4 

Answer 1

On a native Windows install, you can either use batch(cmd.exe) or vbscript without the need to get external tools. Here's an example in vbscript:

Set objFS = CreateObject("Scripting.FileSystemObject") strFile = "c:\test\file.txt" Set objFile = objFS.OpenTextFile(strFile) Do Until objFile.AtEndOfStream     strLine = objFile.ReadLine     If InStr(strLine,"ex3")> 0 Then         strLine = Replace(strLine,"ex3","ex5")     End If      WScript.Echo strLine Loop     

Save as myreplace.vbs and on the command line:

c:\test> cscript /nologo myreplace.vbs  > newfile c:\test> ren newfile file.txt