
CODE: [Copy to clipboard]特殊字符未作防范。@echo off
set /p str=输入带空格字符串:
:Loop
if " " == "%str:~-1,1%" (set "str=%str:~0,-1%" && goto loop)
echo %str%结束
pause
goto :eof
CODE: [Copy to clipboard]sed "s/[ \t] *$//g;s/.*/开始&结束/" a.txt
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