if

Performs conditional processing in batch scripts. More information: https://learn.microsoft.com/windows-server/administration/windows-commands/if.

if condition (echo Condition is true)

if not condition (echo Condition is true)

if condition (echo Condition is true) else (echo Condition is false)

if errorlevel 2 (echo Condition is true)

if %variable% == string (echo Condition is true)

if /i %variable% == string (echo Condition is true)

if exist path\to\file (echo Condition is true)