帮助使用LD_ preLOAD
我想创建一个库的printf的修改版本，然后调用LD_ preLOAD所以，当我的程序调用printf它使用我的版本。谁能向我解释如何使用LD_ preLOAD，如果有一个特殊的东西，我需要在我的code或我的图书馆办？
I want to create a library with a modified version of printf and then call LD_PRELOAD so when my program calls printf it uses my version. Can someone explain to me how to use LD_PRELOAD and if there is a something special I need to do in my code or my library?
您只需设置环境变量 LD_ preLOAD 来的完整路径替换库。既然你那点之后推出的所有程序将会尝试使用这个库，你可能想使一个包装脚本，设置 LD_ preLOAD 然后调用你想要的程序运行。
You just set the environment variable LD_PRELOAD to the full path to the replacement library. Since all programs you launch after that point will attempt to use this library, you may want to make a wrapper script that sets LD_PRELOAD then calls the program you want to run.