run '命令将从头重新运行程序，直到gdb中断为止。
The 'run' command will rerun the program from the beginning until GDB breaks.
所以你工作的方向不是做小的改动并重新运行程序，而是真正地思考程序在干什么。
So you don't tend to make tiny changes and re-run things, you tend to actually think about what the code is doing.
为这些文件保留一个备份；如果它们被删除，您需要重新运行程序来生成一个新的URL，以便重新创建它们。
Keep a backup of these files; if they are deleted, you will need to rerun the program to generate a new URL to recreate them.
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