how to use substring in batch program

Question

I have a file which contains values like below

10AB2CDEFG12345
10AB5CDEFG894567

From the above I want only the 4 characters(alphanumeric) after 10 which in the above case is

AB2C and AB5C.

Doing it for a set value like

set tmp=10AB2CDEFG12345
@echo %tmp:~2%

gives me AB2CDEFG12345

Royi Namir · Accepted Answer · 2013-08-05 07:32:58Z

2

try this

set var=10AB2CDEFG12345
set "var=%var:~2,4%"
echo %var%

Look at help set for more help.

Royi Namir

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answered Aug 5, 2013 at 7:30

Endoro

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3 Comments

+1 Didn't know it's possible. I will just edit to make it clearer.

The above worked just fine but can you help me figure out how I can run the above against a file with such values.The input should be the file name.

@Sankasu this answer is finished. Enhancing questions does not correspond to the SO rules. But you might simply make a new question.

Ebbe M. Pedersen · Accepted Answer · 2013-08-05 07:32:22Z

0

Two ways of doing it:

set tmp=10AB2CDEFG12345
@echo %tmp:~2,-9%
@echo %tmp:~2,4%

answered Aug 5, 2013 at 7:32

Ebbe M. Pedersen

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