Added convert-dir27z.ps1

scripts/convert-dir27z.ps1

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+<#
+.SYNOPSIS
+	Converts a directory into a .7z file
+.DESCRIPTION
+	This PowerShell script compresses the given directory (including subfolders) into a compressed .7z file.
+	It also preserves symbolic links and requires that 7-zip is installed.
+.PARAMETER dirPath
+	Specifies the path to the directory (to be entered by default)
+.PARAMETER targetFile
+	Specifies the path to the target file (<dirPath>.7z by default)
+.EXAMPLE
+	PS> ./convert-dir27z.ps1 C:\Windows Win.7z
+	✅ Converted 📂C:\Windows into Win.7z in 291s.
+.LINK
+	https://github.com/fleschutz/PowerShell
+.NOTES
+	Author: Markus Fleschutz | License: CC0
+#>
+
+param([string]$dirPath = "", [string]$targetFile = "")
+
+try {
+	if (-not(Test-Path "C:\Program Files\7-Zip\7z.exe" -pathType leaf)) { throw "Please install 7-Zip" }
+	if ($dirPath -eq "" ) { $dirPath = Read-Host "Enter the path to the folder" }
+
+	$stopWatch = [system.diagnostics.stopwatch]::startNew()
+	$dirPath = Resolve-Path $dirPath
+	if ($targetFile -eq "" ) { $targetFile = "$dirPath.7z" }
+
+	& "C:\Program Files\7-Zip\7z.exe" a -y -snl -t7z $targetFile $dirPath
+
+	[int]$elapsed = $stopWatch.Elapsed.TotalSeconds
+	"✅ Converted 📂$dirPath into $targetFile in $($elapsed)s."
+	exit 0 # success
+} catch {
+	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}