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delayed environment variable

Translation of "delayed environment variable" in Chinese

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delayed environment

延迟环境

variable

变量可变变变化变数

延迟环境变量

Finally, support for delayed environment variable expansion has been added.

终于添加了延迟环境变量扩充的支持。

If the length is not specified, then it defaults to theremainder of the variable value. If either number (offset or length) isnegative, then the number used is the length of the environment variablevalue added to the offset or length specified. %PATH:~-10%would extract the last 10 characters of the PATH variable. %PATH:~0,-2%would extract all but the last 2 characters of the PATH variable.Finally, support for delayed environment variable expansion has been added.

如果没有指定长度，则采用默认值，即变量数值的余数。如果两个数字（偏移量和长度）都是负数，使用的数字则是环境变量数值长度加上指定的偏移量或长度。 %PATH：~-10%会提取 PATH 变量的最后十个字符。

Youcan enable or disable delayed environment variable expansion for aparticular invocation of CMD.EXE with the/V:ON or/V:OFF switch.

您可以用/V：ON 或/V：OFF命令行开关，为 CMD.EXE 的某个调用而启用或停用延迟环境变量扩充。

Delayed environment variable expansion allows you to use a different character (the exclamation mark) to expand environment variables at execution time.

延迟环境变量扩充允许您使用一个不同的字符（惊叹号）在执行时间扩充环境变量。

Delayed environment variable expansion is useful for getting around the limitations of the current expansion which happens when a line of text is read, not when it is executed.

考虑到读取一行文本时所遇到的目前扩充的限制时，延迟环境变量扩充是很有用的，而不是执行的时候。