Advanced Batch

Once you can write simple linear scripts, it's time to add logic. Batch files support conditional execution (if), loops (for), and jumping to specific sections (goto).

Try the command

Check if a file exists!

Build the command

errorlevelChecks the exit code of the previous command.

Terminal

C:\Users\User>if exist config.ini (echo Found) else

Flow Control Concepts

1. Conditional Execution (IF)

Execute commands only when certain conditions are met.

if exist config.txt (
    echo Config found!
) else (
    echo Config missing!
)

2. Loops (FOR)

Repeat a command for a set of files or numbers.

:: Print numbers 1 to 5
for /L %%i in (1,1,5) do echo %%i

3. Goto and Labels

Jump to different parts of your script.

:Start
echo Working...
goto End

:End
echo Done.

Real-World Examples

1. Creating a backup if a file exists

Safeguard your data automatically.

Try the command

Choose an option and the terminal output updates immediately.

Terminal

C:\Users\User>if exist data.txt copy data.txt data.bak

2. Looping through files

Process every .txt file in the current folder.

Try the command

Choose an option and the terminal output updates immediately.

Terminal

C:\Users\User>for %f in (*.txt) do echo Found %f

(Note: Use %f in command line, but %%f in batch files)

Knowledge Check

1 / 3

Which keyword is used for conditional logic?

when

if

check

verify

Advanced Batch

Flow Control Concepts

1. Conditional Execution (IF)

2. Loops (FOR)

3. Goto and Labels

Real-World Examples

Knowledge Check

References