TLDR
Enter a command. For example: set, get childitem, reg compare.

if

 
Performs conditional processing in batch scripts. More information: https://docs.microsoft.com/windows-server/administration/windows-commands/if.
 
  • Execute the specified commands if the condition is true:
     
    if {{condition}} ({{echo Condition is true}})
     
  • Execute the specified commands if the condition is false:
     
    if not {{condition}} ({{echo Condition is true}})
     
  • Execute the first specified commands if the condition is true otherwise execute the second specified commands:
     
    if {{condition}} ({{echo Condition is true}}) else ({{echo Condition is false}})
     
  • Check whether %errorlevel% is greater than or equal to the specified exit code:
     
    if errorlevel {{exit_code}} ({{echo Condition is true}})
     
  • Check whether two strings are equal:
     
    if %{{variable}}% == {{string}} ({{echo Condition is true}})
     
  • Check whether two strings are equal without respecting letter case:
     
    if /i %{{variable}}% == {{string}} ({{echo Condition is true}})
     
  • Check whether a file exist:
     
    if exist {{path/to/file}} ({{echo Condition is true}})

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