What does Setlocal in batch file?

Use setlocal to change environment variables when you run a batch file. The Cmd.exe program restores previous settings when it encounters an endlocal command or reaches the end of the batch file. You can have more than one setlocal or endlocal command in a batch program (that is, nested commands).

What is Setlocal EnableDelayedExpansion in batch file?

ENABLEDELAYEDEXPANSION is a parameter passed to the SETLOCAL command (look at setlocal /? ) Its effect lives for the duration of the script, or an ENDLOCAL : When the end of a batch script is reached, an implied ENDLOCAL is executed for any outstanding SETLOCAL commands issued by that batch script.

What is Setlocal EnableExtensions EnableDelayedExpansion?

Syntax SETLOCAL SETLOCAL {EnableDelayedExpansion | DisableDelayedExpansion} {EnableExtensions | DisableExtensions} Key EnableDelayedExpansion Expand variables at execution time rather than at parse time. DisableDelayedExpansion Expand variables at parse time rather than at execution time.

How do you stop echo?

To prevent echoing all commands in a batch file, include the echo off command at the beginning of the file. To display a pipe ( | ) or redirection character ( < or > ) when you are using echo, use a caret ( ^ ) immediately before the pipe or redirection character. For example, ^| , ^> , or ^< ).

What does nul 2 &1 mean?

command 2>nul. ^ This says to pipe the standard-error stream to null. command 2>&1. ^ This says to pipe the standard-error stream to the same place as the standard-output stream.

What does nul 2 >& 1 do?

1 Answer. Redirects anything written to the standard output stream (stream number 1) to the nul device. Anything sent to this device is discarded. The effect is that all the normal output of the ping command is hidden.

What commands are available in a batch file?

The commands in a batch file are executed by a special interface or shell. These commands may include “goto,” “for,” “call,” “echo,” “setlocal,” etc., and may make use of decision and loop constructs. A batch script can be created using any text editor such as Notepad or WordPad , and must be saved only in plain text format.

What is a batch file?

A batch file is a text file that contains a sequence of commands for a computer operating system.

How do you run bat file in command prompt?

Running in Command Prompt Open Start . Type cmd into start. Right-click on Command Prompt . Click Run as administrator. Type cd followed by the file’s location. Press ↵ Enter. Type the BAT file’s full filename. Press ↵ Enter.

How do I create a batch script?

To create a simple batch file on Windows 10, use these steps: Open Start. Search for Notepad, and click the top result to launch the app. Type the following lines to create a simple batch file: @ECHO OFF ECHO Congratulations! Click the File menu. Select the Save as option. Type a name for the script, for example, first_simple_batch.bat.