Batch script loop

Windows Client (10, 11, 12) Performance & Dépannage
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1

Batch script loop

2

for /l is your friend:

for /l %x in (1, 1, 100) do echo %x

Starts at 1, increments by one, and finishes at 100.

WARNING: Use %% instead of %, if it’s in a fichier batch, like:

for /l %%x in (1, 1, 100) do echo %%x

(which is one of the things I really really hate about windows scripting.)

If you have multiple commands for each iteration of the loop, do this:

for /l %x in (1, 1, 100) do (
   echo %x
   copy %x.txt z:\whatever\etc
)

or in a fichier batch:

for /l %%x in (1, 1, 100) do (
   echo %%x
   copy %%x.txt z:\whatever\etc
)

Key:

  • /l denotes that the for command will operate in a numerical fashion, rather than operating on a set of files

  • %x is the loops variable and will be (starting value, increment of value, end condition[inclusive] )