77七

换行符不同

77七

回复 3# tiandyoin


  

echo head=#!head!#
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head=#0 #
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77七

@echo off
set a=1 &set b=2
echo %a%#
set "a=1"&set b=2
echo %a%#
set "a=1" &set b=2
echo %a%#
(set a=1)&set b=2
echo %a%#
set "a="
pause
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77七

回复 6# tiandyoin

@echo off
set str=123456
setlocal enabledelayedexpansion
echo %str:~0,2%
echo,%str:~0,2%
echo=%str:~0,2%
echo.%str:~0,2%

echo !str:~0,2!
echo,!str:~0,2!
echo=!str:~0,2!
echo.!str:~0,2!

pause
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批处理技术内幕：ECHO命令