Remove character at begin of line

[DavideX]

Hello,
I have a txt file like this:

0 ABCDE67890 12345FGHIJ ...
1 12SAG3J590 FGDG45346Y ..
2 GASDFSD230 ...
3 ....
0 HFJSHSDK24323 ...
1 ....
2 ....
3 ....

I would create a batch file to search and remove all "0 " (zero+space) only at the begin of lines, preserving every other occurrences. The output should be like this:

ABCDE67890 12345FGHIJ ...
1 12SAG3J590 FGDG45346Y ..
2 GASDFSD230 ...
3 ....
HFJSHSDK24323 ...
1 ....
2 ....
3 ....

I'm newbie about batch and programming, could someone kindly help me?

Thanks!
David.

[foxidrive]

Here is a robust and quick solution:

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@echo off
type "file.txt" | repl "^0 " "" >"newfile.txt"

This uses a helper batch file called `repl.bat` (by dbenham) - download from: https://www.dropbox.com/s/qidqwztmetbvklt/repl.bat

Place `repl.bat` in the same folder as the batch file or in a folder that is on the path.

[Yury]

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@(for /f "useback tokens=* delims=0 " %%i in ("example.txt") do @echo.%%i)>"new.txt"

[foxidrive]

With the data as shown it will work, but it would be very useful to future readers to
state that it will not work as shown with multiple spaces or multiple zeros at the start of the line.

[Yury]

With the data as shown it will work, but it would be very useful to future readers to
state that it will not work as shown with multiple spaces or multiple zeros at the start of the line.

This code does not affect the rest of zeros and spaces, and will also work with poison characters and with exclamation marks:

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@(for /f "usebackq delims=" %%i in ("example.txt") do @set x=%%i& cmd /v:on /c echo.!x!|>nul findstr /bc:"0 "&&cmd /v:on /c call echo.!x:*0 =!|| echo.%%i)>"new.txt"

.

[foxidrive]

This will still nuke any leading spaces and any numbers or text before the first "0 " on all the other lines, true?

.

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&cmd /v:on /c call echo.!x:*0 =!

[Yury]

This will still nuke any leading spaces and any numbers or text before the first "0 " on all the other lines, true?

.

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&cmd /v:on /c call echo.!x:*0 =!

foxidrive, this will nuke only the text before the first "0 " and the first "0 ", but with

Code: Select all

findstr /bc:"0 "

only the first "0 " are deleted.

[ghostmachine4]

vbscript

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Set objFSO=CreateObject("Scripting.FileSystemObject")
inputFile = WScript.Arguments(0)
Set objFile = objFSO.OpenTextFile(inputFile)
Do Until objFile.AtEndOfStream
   strNextLine = objFile.ReadLine
   Do While Mid(strNextLine,1,1) = "0" Or  Mid(strNextLine,1,1) = " "
     strNextLine = Mid(strNextLine,2,Len(strNextLine) ) 
   Loop 
   WScript.Echo strNextLine
Loop

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cscript //nologo removeZeroesSpaces.vbs file

[foxidrive]

foxidrive, this will nuke only the text before the first "0 " and the first "0 ", but with

Code: Select all

findstr /bc:"0 "

only the first "0 " are deleted.

Sorry Yury, I didn't pay close enough attention.

[DavideX]

Hello guys,
all solutions works great for my needs!

Thanks very much to all for your help and kindness.

Regards.

David.