From d2cf0b2a39be87efebbe5a16feadfb64894748e2 Mon Sep 17 00:00:00 2001
From: "pavel.muhortov" <pavel.muhortov@gmail.com>
Date: Sat, 27 Nov 2021 13:24:11 +0300
Subject: [PATCH] add hvswitch.cmd

---
 README.md    | 16 +++++++------
 hvswitch.cmd | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 74 insertions(+), 7 deletions(-)
 create mode 100644 hvswitch.cmd

diff --git a/README.md b/README.md
index 88fd64f..4a51888 100644
--- a/README.md
+++ b/README.md
@@ -1,21 +1,23 @@
-# template-cmd
-Repository description
+# Tweaks for Windows
+Tools for managing Windows setting
 
-* [`script`](https://git.hmp.today/pavel.muhortov/template-cmd#script)
+* [`hvswitch`.cmd](https://git.hmp.today/pavel.muhortov/tweaks-for-windows#hvswitch-cmd)
 
 ____
-## `script`
-**Description:** Script description  
+## `hvswitch`.cmd
+**Description:** Microsoft Hyper-V switch on/off  
 **Dependencies:** Windows (tested version 10.0.19043)
 
 |  POSITION | PARAMETERS   |       DESCRIPTION      |    DEFAULT    |
 |-----------|--------------|------------------------|---------------|
-|     1     |    **qn**    |execution without pauses|     `None`    |
+|     1     |    **[qn]**    |execution without pauses|     `None`    |
+|     2     |    **[y]**    |enable Hyper-V, if it off|     `None`    |
+|     2     |    **[n]**    |disable Hyper-V, if it on|     `None`    |
 
 
 Example usage in terminal:
 ```cmd
-.\script.cmd qn
+.\hvswitch.cmd qn y
 ```
 
 ____
diff --git a/hvswitch.cmd b/hvswitch.cmd
new file mode 100644
index 0000000..dc91f4e
--- /dev/null
+++ b/hvswitch.cmd
@@ -0,0 +1,65 @@
+pushd "%~dp0"
+@echo off
+goto :Start
+
+--------------------------------------------------
+Microsoft Hyper-V switch on/off
+
+Positional parameters:
+  [1] qn - execution without pauses
+  [2] y  - enable Hyper-V, if it off
+      n  - disable Hyper-V, if it on
+
+--------------------------------------------------
+
+:Start
+	set choice=%~2
+
+:Admin_Check
+	net session >nul 2>&1
+	if %errorLevel% == 0 (
+		set code=0
+	) else (
+		set code=5
+		cls
+		echo Restart this as Administrator!
+		goto :Exit
+	)
+
+:HV_Check
+	bcdedit /enum | FINDSTR /IL "hypervisorlaunchtype" | FINDSTR /IL "auto"
+	if %errorLevel% EQU 0 (
+		set state=auto
+	) else (
+		set state=off
+	)
+
+:HV_Choice
+	cls
+	if "%choice%" EQU "y" (
+		if "%state%" EQU "auto" goto :Exit
+		goto :HV_enable
+	)
+	if "%choice%" EQU "n" (
+		if "%state%" NEQ "auto" goto :Exit
+		goto :HV_disable
+	)
+	set /p choice= Do you need a Hyper-V enabled? [y or no]:
+	goto :HV_Choice
+
+:HV_enable
+	echo Hyper-V enabled...
+	bcdedit /set hypervisorlaunchtype auto
+	shutdown -r -f -t 5 -c "After 5 seconds, the computer will restart"
+	goto :Exit
+
+:HV_disable
+	echo Hyper-V disabled...
+	bcdedit /set hypervisorlaunchtype off
+	shutdown -r -f -t 5 -c "After 5 seconds, the computer will restart"
+	goto :Exit
+
+:Exit
+if "%~1" NEQ "qn" pause
+popd
+exit %code%