Replace a substring using position string substitution

[darioit]

Hello,
I find this script for string substitution

Code: Select all

set str=teh cat in teh hat
echo.%str%
set str=%str:teh=the%
echo.%str%

How can I modify this script specifying a string position, in this case change string "teh" if it found only a position 11,3

Thank you

[aGerman]

You may try

Code: Select all

if "%str:~11,3%"=="teh" set "str=%str:~,11%the%str:~14%"

Regards
aGerman