PowerShell/docs/replace-in-files.md

Script: *replace-in-files.ps1*
========================

This PowerShell script searches and replaces a pattern in the given files by the replacement.

Parameters
----------
```powershell
PS> ./replace-in-files.ps1 [[-pattern] <String>] [[-replacement] <String>] [[-filePattern] <String>] [<CommonParameters>]

-pattern <String>
    Specifies the text pattern to look for
    
    Required?                    false
    Position?                    1
    Default value                
    Accept pipeline input?       false
    Accept wildcard characters?  false

-replacement <String>
    Specifies the text replacement
    
    Required?                    false
    Position?                    2
    Default value                
    Accept pipeline input?       false
    Accept wildcard characters?  false

-filePattern <String>
    Specifies the file to scan
    
    Required?                    false
    Position?                    3
    Default value                
    Accept pipeline input?       false
    Accept wildcard characters?  false

[<CommonParameters>]
    This script supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction, 
    WarningVariable, OutBuffer, PipelineVariable, and OutVariable.
```

Example
-------
```powershell
PS> ./replace-in-files NSA "No Such Agency" C:\Temp\*.txt

```

Notes
-----
Author: Markus Fleschutz | License: CC0

Related Links
-------------
https://github.com/fleschutz/PowerShell

Script Content
--------------
```powershell
<#
.SYNOPSIS
	Search and replace a pattern in the given files by the replacement
.DESCRIPTION
	This PowerShell script searches and replaces a pattern in the given files by the replacement.
.PARAMETER pattern
	Specifies the text pattern to look for
.PARAMETER replacement
	Specifies the text replacement
.PARAMETER filePattern
	Specifies the file to scan
.EXAMPLE
	PS> ./replace-in-files NSA "No Such Agency" C:\Temp\*.txt
.LINK
	https://github.com/fleschutz/PowerShell
.NOTES
	Author: Markus Fleschutz | License: CC0
#>

param([string]$pattern = "", [string]$replacement = "", [string]$filePattern = "")

function ReplaceInFile { param([string]$path, [string]$pattern, [string]$replacement)

    [System.IO.File]::WriteAllText($path,
        ([System.IO.File]::ReadAllText($path) -replace $pattern, $replacement)
    )
}

try {
	if ($pattern -eq "" ) { $pattern = Read-Host "Enter the text pattern to look for" }
	if ($replacement -eq "" ) { $replacement = Read-Host "Enter the text replacement" }
	if ($filePattern -eq "" ) { $filePattern = Read-Host "Enter the file pattern" }

	$stopWatch = [system.diagnostics.stopwatch]::startNew()
	$files = (Get-ChildItem -path "$filePattern" -attributes !Directory)
	foreach($file in $files) {
		ReplaceInFile $file $pattern $replacement
	}
	[int]$elapsed = $stopWatch.Elapsed.TotalSeconds
	"✔️ Replaced '$pattern' by '$replacement' in $($files.Count) files in $elapsed sec"
	exit 0 # success
} catch {
	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
	exit 1
}
```

*(generated by convert-ps2md.ps1 using the comment-based help of replace-in-files.ps1 as of 08/15/2024 09:50:53)*