gdb的一些不太容易记得的用法

基本的gdb使用

1. 

Note: You can also modify variables' values by

set <var> = <value>

2. 

The command to set a simple watchpoint (a write watchpoint, i.e you are notified when the value is written) is

watch <var>

3.

Remember that GDB comes built in with an excellent help system. Just type help in the (gdb) prompt and you will be presented with options of what you could need help with. For details about a specific command, use the syntax

help <command>

来源：https://www.cprogramming.com/gdb.html

　

它的Read more也有一些有意思的主题，尤其是下面1、2、3感觉都很有用，以后可以看看（TODO）

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