Regardless of the programming or scripting language used, it is always a good idea to insert comments in scripts, explaining what the next lines or block of code is trying to accomplish, how and/or why.Ĭomments in batch files are usually placed in lines starting with REM (REMarks).
:: Using two other variables to denote the start index and end index of the array set /A start = 0 set /A step = 1 set /A end = 2 :: Using For loop :: Use /L for Numeric Looping of For loop :: In below example, "%%a" is the iteration variable :: Single command For Loop. Set MyPaths =C:\Program Files\Google\Chrome\Application\chrome.exe Set MyPaths =C:\Program Files (x 86)\Notepad++\notepad++.exe :: Defining Arrays in Batch File :: Technically arrays are not supported in batch file :: But we can statically define multiple variable names which will mimic an array, like below set MyPaths =C:\Program Files\Mozilla Firefox\firefox.exe Value of MyFlag was !MyFlag!Įcho Production Mode. :: To define a variable as a number, use "/A" like below set /A MyFavoriteNumber = 2 :: Example IF.ELSE Case IF %MyModeFlag% =dev (Įcho Dev Mode. :: For list of more such variables, refer to the table at :: Assigning a value for a variable using "set" command :: Below is a string variable set MyModeFlag =dev set MyLocalPath = %LocalAppData%/MyRandomFolder :: You can use Windows environmental variables like %LocalAppData% :: If you want to get the path of a folder called "MyRandomFolder" inside an environmental variable like above, use as below. :: Turning echo off to disable printing of each line of below file to echo off :: Delayed expansion has to be enabled, to dynamically assign values for variables using "!VariableName!" setlocal enabledelayedexpansion This covers creation of arrays and usage of loops in batch file. Loops and Structures in Windows Batch File :: Copying file contents of one folder to another :: Deleting a file del /f SomeFolder/SubFolder/RandomFile.txt
Timeout 60 :: To pause indefinitely till user presses a key, use the "pause" command pause :: To call another batch file, use the call command :: File/Folder paths in batch file can either be absolute or relative to the current path call SomeFolder\SubFolder\SomeBatchFileName.bat :: Use the "timeout" command to make the console wait for a specified timeout in seconds :: If user presses any key during the timeout, it will immediately proceed to the execution of next line :: If user has not pressed any key and the timeout period is elapsed, it will proceed to the execution of next line :: Printing to Console echo This prints anything to the console window :: Comments can be added to batch file using '::' at the This is another way to add comment to a batch file
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