CODEWITHSUNDEEP
batch-filescripting
DoodleKana
DoodleKana

Reputation: 2206

what is %% and /r mean in for loop in batch file?

I am mostly familiar with bash scripting not dos. So I have this command in a batch file I know is iterating over all the files in a directory. But I want to know what /r and %% mean. (i know %%i is referring to each file)

for /r %%i in (*) do ( echo %%i )

Upvotes: 3

Views: 20229

Answers (2)

ths
ths

Reputation: 2942

the above command actually is incorrect. the /r switch expects a root path to iterate, eg. for /r . %i in (*) ... or for /r c:\xyz %i ...
the %i is the replaceable variable in the for loop. (you can use a-z and a few other characters). the % is akin to the $ in bash. note: use %i on the command line, but you need to double the % in a batch file.

Upvotes: 2

uncoder
uncoder

Reputation: 1876

/r - iterate through the folder and all subfolders, i.e. recursively.

%%I - placeholder for a path/filename

The above command simply lists all files in the current folder and all subfolders.

Upvotes: 3

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