If the first command doesn't succeed, you will get plenty of error messages to help you find the problem, which is usually a missing gem or file.

如果第一条命令没有成功，您将得到大量错误消息以帮助您找到问题，这个问题通常是缺失一个gem或文件。

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Ignore the later errors in the list; scroll upward until you find the first error message.

不要管列表中后面出现的错误，向上滚动找到第一个错误消息。

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In order for the command-line compiler to find the runtime error with -f, you must compile the program with all the same command-line parameters you used the first time you compiled it.

为了命令行编译器能用- F选项查找运行期间错误，你必须传递与第一次编译时相同的指令列表。

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