heyoug 当前离线
四级士官
vsbat 当前离线
大校
setlocal enabledelayedexpansion cd.>b.txt for /f %%i in (a.txt) do ( set "t=%%i" set "t=!t:~0,-6!" echo !t! >>b.txt ) pause复制代码
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CUer 当前离线
上尉
gawk "{print substr($0,1,4)}" 1.txt >2.txt复制代码
sed "s/\(^....\).*/\1/" 1.txt >2.txt复制代码
hanyeguxing (寒夜孤星)当前离线
荣誉版主
@echo off&setlocal enabledelayedexpansion (for /f %%a in (a.txt) do set a=%%a&echo.!a:~0^,4!)>b.txt复制代码