bat !ERRORLEVEL!

在bat中，!ERRORLEVEL!是一个特殊变量，它用于表示上一条命令的执行结果。当命令执行成功时，!ERRORLEVEL! 的值为0，如果命令执行失败，则!ERRORLEVEL!的值为非零数值。可以使用!ERRORLEVEL!与条件语句结合使用，来进行条件判断和跳转。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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