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前言本篇文章我们来讲解守护进程，守护进程在进程中是一个比较重要的概念，在笔试面试中也经常考到，这篇文章就带大家来学习一下什么是守护进程。一、守护进程概念守护进程（Daemon Process）是在后台运行的一种特殊类型的进程，独立于终端会话，并且通常没有与用户交互的界面。守护进程在操作系统启动时启动...

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linux系统编程（十）守护进程、线程（下）

【练习】：创建一个新线程，打印线程ID。注意：链接线程库 -lpthread 【pthrd_crt.c】 #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd....

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1.守护进程、线程1.1 进程组和会话1.1.1 概念和特性进程组，也称之为作业。BSD于1980年前后向Unix中增加的一个新特性。代表一个或多个进程的集合。每个进程都属于一个进程组。在waitpid函数和kill函数的参数中都曾使用到。操作系统设计的进程组的概念，是为了简化对多个进程的管理。当父...

Linux系统编程---守护进程

守护进程是什么？就是在后台运行的进程。那么如何创建守护进程呢？ 1. 创建孤儿进程 2. setsid() 创建进程会话 3. 重定向标准输入，标准输出 4. chdir, 改当当前进程的工作目录接下来看一个例子： #include <stdio...

linux下Shell编程--标准的守护进程的启动脚本

一个标准的守护进程的启动脚本： #! /bin/sh WHOAMI=`whoami` PID=`ps -u $WHOAMI | gerp mydaemond | awk '{print $1}'` if (test "$1" = "") then echo "mydaemond [start][st...

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