Batch command to remove a string pattern from input file

Question

I'm very new to scripting.

I have a couple of files File1.txt and File2.txt. "RemPattern" is the pattern which I'm expecting to find and remove recursively from the above files.

Is it possible to remove them with the help of any windows or powershell batch command?

I have seen Get-Content can be used to remove an entire line of the matched pattern, but it doesn't fit for my case.

(Get-Content 'File1.txt') -notmatch 'RemPattern' | Set-Content 'File1.txt'

Is it required to write a batch file to achieve this or is it possible to do it by batch commands?

Change -notmatch with -replace and you should be good to go — Lieven Keersmaekers
– Lieven Keersmaekers, Commented Sep 16, 2019 at 7:12
the rationale here is that -notmatch will skip the entire line where a match is found. Note that adding -raw was a good suggestion but that comment has been deleted. — Lieven Keersmaekers
– Lieven Keersmaekers, Commented Sep 16, 2019 at 9:50

Suhas Parameshwara · Accepted Answer · 2019-09-16 07:32:29Z

1

You can try out the -replace instead of -nomatch.

(Get-Content 'D:\File.txt') -replace 'RemPattern' | Set-Content 'D:\File.txt'

answered Sep 16, 2019 at 7:32

Suhas Parameshwara

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user7818749 · Accepted Answer · 2019-09-16 08:23:52Z

0

I was assuming that you wanted to recurse through a set of files and not do them by manually typing the filenames. So you can:

Get-ChildItem F:\ -Filter File*.txt | Foreach-Object{
   (Get-Content $_.FullName) | Foreach-Object {$_ -replace 'RemPattern'} | Set-Content $_.FullName
}

The filter here simply checks File*.txt which in your example will do the replacement for both File1.txt and File2.txt without havign to type out each file manually per line. You can change the filter as you please.

answered Sep 16, 2019 at 8:23

user7818749

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