中国DOS联盟

Originally posted by tireless at 2008-12-15 14:44: [code]@echo off & setlocal EnableDelayedExpansion for /f "delims=" %%a in (test.txt) do ( set str=%%a for /f "delims=" %%i in ("!str:*:=!") do set L=!str:%% ...

Environment variable substitution has been enhanced as follows: %PATH:str1=str2% would expand the PATH environment variable, substituting each occurrence of "str1" in the expanded result with "str2". "str2" can be the empty string to effectively delete all occurrences of "str1" from the expanded output. "str1" can begin with an asterisk, in which case it will match everything from the beginning of the expanded output to the first occurrence of the remaining portion of str1.

Originally posted by HAT at 2008-12-15 03:28 PM: 英文版的是否更清楚呢？ [box=#000000]Environment variable substitution has been enhanced as follows: %PATH:str1=str2% would expand the PATH environment variable, s ...