Renamed to count-lines.ps1 and updated it

scripts/count-lines.ps1

@@ -0,0 +1,40 @@
+<#
+.SYNOPSIS
+	Counts the number of lines 
+.DESCRIPTION
+	This PowerShell script counts the number of lines in text files (.c/.h/.cpp/.hpp/.java/.ps1/.txt/.md) within a directory tree.
+.PARAMETER pathToDirTree
+	Specifies the path to the directory tree.
+.EXAMPLE
+	PS> ./count-lines.ps1 C:\cmake
+	✔️ Found 639921 lines in 11411 text files within 📂cmake in 34 sec.
+.LINK
+	https://github.com/fleschutz/PowerShell
+.NOTES
+	Author: Markus Fleschutz | License: CC0
+#>
+
+param([string]$pathToDirTree = "")
+
+try {
+	if ($pathToDirTree -eq "" ) { $pathToDirTree = Read-Host "Enter the path to the directory tree" }
+
+	$stopWatch = [system.diagnostics.stopwatch]::startNew()
+	$pathToDirTree = Resolve-Path "$pathToDirTree"
+	Write-Progress "Counting lines within $pathToDirTree ..."
+
+	[int64]$numFiles = [int64]$numLines = 0
+	Get-ChildItem -Path $pathToDirTree -Include *.c,*.h,*.cpp,*.hpp,*.java,*.ps1,*.txt,*.md -Recurse | ForEach-Object {
+		$numLines += (Get-Content $_.FullName | Measure-Object -line).Lines
+		$numFiles++
+	}
+
+	$folderName = (Get-Item "$pathToDirTree").Name
+	Write-Progress -completed " "
+	[int]$Elapsed = $stopWatch.Elapsed.TotalSeconds
+	"✔️ Found $numLines lines in $numFiles text files within 📂$folderName in $Elapsed sec." 
+	exit 0 # success
+} catch {
+	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}