Delete certain lines in a txt file via a batch file

chrome_51826 0
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I have a generated txt file. This file has certain lines that are superfluous, and need to be removed. Each line that requires removal has one of two string in the line; "ERROR" or "REFERENCE". These tokens may appear anywhere in the line. I would like to delete these lines, while retaining all other lines.

So, if the txt file looks like this:

Good Line of data
bad line of C:\Directory\ERROR\myFile.dll
Another good line of data
bad line: REFERENCE 
Good line

I would like the file to end up like this:

Good Line of data
Another good line of data
Good line

TIA.

batch-file string
5 Answers

Use the following:

type file.txt | findstr /v ERROR | findstr /v REFERENCE

This has the advantage of using standard tools in the Windows OS, rather than having to find and install sed/awk/perl and such.

See the following transcript for it in operation:

C:\>type file.txt
Good Line of data
bad line of C:\Directory\ERROR\myFile.dll
Another good line of data
bad line: REFERENCE
Good line

C:\>type file.txt | findstr /v ERROR | findstr /v REFERENCE
Good Line of data
Another good line of data
Good line
user_148600

If you have sed:

sed -e '/REFERENCE/d' -e '/ERROR/d' [FILENAME]

Where FILENAME is the name of the text file with the good & bad lines

user_419080

If you have perl installed, then perl -i -n -e"print unless m{(ERROR|REFERENCE)}" should do the trick.

mirod_110950

It seems that using the FIND instead of the FINDSTR can support also unicode characters. e.g. type file.txt | find /v "Ω"

user_108073550
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