CODEWITHSUNDEEP
powershellnewline
Pavel Novak
Pavel Novak

Reputation: 53

Powershell how to add new line after certain string

I am very new to scripting. I am trying to solve one problem and I was looking at windows batch and powershell. I have found this but I dont know, why it is not working:

I have input.txt file with this content:

<a> TEXT </a>
<c> text asdrtlj </c>
<a> another text </a>

I want to add new line before every <a>, so I tried this:

powershell -Command "(gc input.txt) -replace '<a>', '`r`n<a>' | Out-File output.txt"

That adding of newline doesnt work. Can you help me please?

PS: I've found a lot of complicated codes while searching the solution and I haven't understood them yet so if you recommend me some good tutorials where to start with this languages I will appreciate it.

Upvotes: 1

Views: 10356

Answers (2)

Andrei Odegov
Andrei Odegov

Reputation: 3429

We need more quotation marks.

powershell.exe -command "(gc 1_105.jpg) -replace '<a>', """"`r`n<a>""""|Out-File output.txt"

Or how is about a small refactoring?

powershell.exe -Command "gc input.txt|%{$_.replace('<a>',[environment]::newline+'<a>')}|Out-File output.txt"

Upvotes: 2

Mark Wragg
Mark Wragg

Reputation: 23355

There are a couple of issues here. Executing a command via the -command switch of powershell is causing some reserved character issues due to the < > characters.

Instead, open a PowerShell.exe window (start -> run -> powershell) and execute the command directly.

You also need to use double quotes not single quotes in order for special codes like `r and `n to work. Also `n should be sufficient on its own:

(gc input.txt) -replace '<a>', "`n<a>" | Out-File output.txt

Upvotes: 5

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