程序函数Linux 的相关内容

文章 2024-04-22 来自：开发者社区

测试程序之提供ioctl函数应用操作GPIO适用于Linux/Android

当时这个测试程序是给Linux用户的示例 , 还有个对应的driver 。程序功能介绍这个程序是用来控制一些GPIO引脚和电源LED的。它接受两个或三个参数，分别是命令、GPIO编号和GPIO值。它会根据参数的设置，打开一个设备文件，并使用ioctl函数来执行相应的操作。它支持四种命令，分别是： 0: 读取输入GPIO的值 1: 设置输出GPIO...

文章 2024-03-01 来自：开发者社区

进程的程序替换(exec函数)【Linux】

程序替换的原理进程的程序替换就是让子进程执行新程序，执行全新的代码和数据，不再和父进程有瓜葛。替换原理用fork创建子进程后执行的是和父进程相同的程序(但有可能执行不同的代码分支),子进程往往要调用一种exec函数以执行另一个程序。当进程调用一种exec函数时,该进程的用户空间代码数据完全被新程序替换,从新程序的启动例程开始执行。调用exec并...

阿里云文档 2020-08-06

Linux系统的云虚拟主机如何隐藏PHP程序的错误信息

概述本文主要介绍Linux系统的云虚拟主机，如何隐藏PHP程序的错误信息。详细信息阿里云提醒您：如果您对实例或数据有修改、变更等风险操作，务必注意实例的容灾、容错能力，确保数据安全。如果您对实例（包括但不限于ECS、RDS）等进行配置与数据修改，建议提前创建快照或开启RDS日志备份等功能。如果您在阿...

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