Linux

Processes and ThreadsConcept: In Linux, threads are generally considered "lightweight processes", processes are stand-alone units of an application, and threads cannot exist independently, and must be created by a process. The advantages of line

Directory structure: Commomlib--|inc --|src --|obj --|lib --| Makefile GCC : = gcc gxx : = g++ ld : = ld ar : = ar ldflags : =-shared-fpic arflags : =-RC Cflags : =-g-wall-fpic dir_inc: =./inc dir_src: =./src dir_obj : = ./obj Dir_lib :

Bad mood, less talk, first of all, the test environment of Windows here: Windows XP SP3 + SFU3.5 (Windows service for UNIX) The Linux side uses NFS to share/home/syniapp This directory, my exports file content is: /home/syniapp 168.168.2.155

Linux systems can view memory usage through the Cat/proc/meminfo command:memtotal:3934164 KBmemfree:307128 KBbuffers:148556 KBcached:1051540 KBswapcached:213796 KBactive:2309512 KBinactive:990744 KBActive (anon): 1710288 KBInactive (anon): 458576

When you deploy a project on Linux, you start Tomcat, and you often see only the following display: If there is a bug in the project or something unusual, it is difficult to see the error message, how to see the same as the windows of Tomcat or

The elephant will be installed in a refrigerator, a total of three steps, a refrigerator door open, two elephants into, three refrigerator door close, simple and rough. Unfortunately, our process and the conversion of the thread is not the elephant

First, the use of the Select () function to achieve non-blocking wait time, using the structure of struct Timeval {}, here is not much to say. Second, use Gettimeofday () can obtain the subtle level (0.000001 seconds) of the system time, call two

Introduction to the top commandDuring system maintenance, you may need to look at the CPU usage at any time, and analyze the system condition according to the corresponding information. In CentOS, you can view CPU usage through the top command. When

DHCP service under Linux Operating system: redhat6.0 I. Structure description 1 gateway Address: 192.168.107.1, subnet mask: 255.255.255.0 2) DHCP server (Redhat 6.0). IP configuration for DHCP: 3) a client computer. IP is automatically assigned

It's been two years with Linux, but there are still a lot of commands that can't be remembered. In this blog to record some difficult to remember the Linux commands for easy access, this article will be updated for a long time Xdg-open and in the

1 Shutdown Command shutdown As if the default in Ubuntu's terminal is the current user's command, just a regular user, so you can use Sudo-sh in the terminal to execute commands under administrator root. 1) shutdown–help You can see how the shutdown

1. Installation dependency Pack and Chinese man Handbook sudo apt-get install manpages-posix manpages-posix-dev sudo apt-get install Generally execute these two on it, if you have not switched to Chinese, open the file sudo

Scenario: When installing CENTOS7 on Vmware12.pro, just go in and find no graphical interface. When the installation is not connected to the network, so Baidu query to solve the problem: 1. Networking issues: 1.1 First configure the virtual

Create a cron service for the current user 1. Type CRONTAB-E edit crontab service file For example, the contents of the file are as follows: */2 * * * */bin/sh/home/admin/jiaoben/buy/deletefile.sh Save File and exit */2 * * *

Linux display displays only catalog files youhaidong@youhaidong-thinkpad-edge-e545:~$ Ls-l-D/ drwxr-xr-x 2 root 4096 January 1 21:18 java/ drwxr-xr-x 2 root 4096 January 1 21:45 jdk/ drwxrwxr-x 6 Youhaidong youhaidong 4096

The previous article simply said the basic operation of Linux multithreaded programming, this article to simply say that the synchronization between the threads and mutual exclusion. First of all multithreading synchronization and mutual exclusion

This article is the simple implementation of a Linux under the TCP network programming small example. Total is divided into two parts: customer service end of the implementation and server-side implementation. The implementation of the function is

Why should SACK be designed? TCP may experience poor performance when multiple packets are lost from one window of data. With the limited information available to cumulative acknowledgments, a TCP sender can only learn about a single lost PA Cket

Linux System Monitoring Tools 1.top Process Monitoring The top command under Linux is a performance monitoring program that many system administrators use to monitor Linux performance, and this command is available on many Linux or Unix-like

Accumulation of problems in embedded Linux startup process Bowen Original Address: http://blog.csdn.net/dzassn/article/details/1953993 1.Bad Magic Number # # Booting image at 33000000 ... Bad Magic number OMAP5912 OSK # (TFTP download good kernel