Linux

Linux processes and threads * Process status Task_running // runTask_interruptible // The process can receive OS signals.Task_uninterruptible // at this time, the process does not receive OS signals.Task_zombie // process ends, resources are

Modifies attributes of a thread. In the example in the previous section, we used the pthread_create function to create a thread. In this thread, we used the default parameter to set the second parameter of the function to null. Indeed, for

Main configuration file path:/etc/vsftpd. conf some important parameters: Anonymous_enable = yes/no whether anonymous users are allowed to access anon_upload_enable = yes/no whether anonymous users are allowed to upload files

I saw a TV series called "Little Dragon man" when I was a child.InspirationalIn order to find your mother, it is a great TV series. What are the children watching now? Xuanyuan sword, god of every day, magic, illusion, and flashy stuff. Apart from

1.3 Input subsystem device driver description 1.3.1 Enable and disable Functions Struct input_devInOpenAndCloseTwo function pointers. InHandlerIt will be called after the first connectionOpenFunction, which is called when the

Here, Tao uses Ubuntu 12.04 as an example to describe how to use the Douban FM client: Enter your account and password to log on to Douban FM: ProgramThe interface is concise, with only one album cover: Right-click the

Linux Command free detailed explanation from: houfeng http://qa.taobao.com/blogs/qa? Bid = 2265 Some time ago, a project was written in C, and memory leakage was found during performance tests. Free is a useful command for observing memory usage.

Linux User-related commands PasswdCommand For the sake of system security, in Linux, each user has a user name and password. Therefore, when you use the useradd command to add a new user, you also need to use the passwd command to set a password

Ah Zhu, it's time to embrace Linux! Author: Lai Yonghao (http://blog.csdn.net/lanphaday)   In this era of Microsoft's "black screen", Linux, as a substitute for Windows, has become increasingly popular. Today, the name of csdn boadzhu wrote an

In the previous chapter, we have been based on the assumption that clock events in Linux are provided by a periodic clock, regardless of whether clock_event_device in the system works in the periodic trigger mode, whether the single-trigger mode or

Linux input drivers V1.0 (C) 1999-2001 vojtech Pavlik Sorted sored by SuSE ---------------------------------------------------------------------------- 0. Copyright description ~~~~~~~~~~~~~ This program is free software; you can redistribute it

1. kobject, ktype, kset Kobject represents the directory in sysfs. Ktype indicates the type of kobject, which mainly includes the release function and the read/write function of ATTR. For example, all buses have the same bus_type, and all classes

Statement: the content of this blog is created at http://blog.csdn.net/droidphone. please refer to it for help. Thank you!1. What is PCM? PCM is the abbreviation of Pulse-code modulation. We know that in real life, the voice heard by human ears is

2.3 Evdev_handler Implementation LinuxSeveral input subsystems have been createdHandlerIt is used to process several common events, such as the mouse, keyboard, and joystick. The most basic isEvdev_handler, It is inDriver/input/evdev. c. It

1. Origin of ASOC ASOC-ALSA system on chip is a software system built on the standard ALSA driver layer to better support audio codec in embedded processors and mobile devices. Before the emergence of ASOC, the kernel had some support for the

Standard C specifies that the fflush () function is used to refresh the output (stdout) cache. It is not defined for input (stdin. However, some compilers also define the implementation of fflush (stdin), such as Microsoft's VC. Whether other

ImageMagick was used in the development of a project. Our testing environment is normal, and the customer's testing environment is installed according to the installation method of our development environment, however, an error is reported when

1. Principles of user query tools; In user management, user queries are performed using several common tools, such as ID, finger, groups, users ......, we all know that the user configuration file is/etc/passwd, and the user group configuration file

Top-08:28:14 up 30 days, 4 Users, load average: 0.00, 0.00, 0.00Task: 150 total, 1 running, 149 sleeping, 0 stopped, 0 zombieCPU (s): 0.0% us, 0.0% Sy, 0.0% Ni, 99.9% ID, 0.0% wa, 0.1% hi, 0.0% SiMem: 2070564 k total, 1340828 K used, 729736 K free, 1

For Linux, you often need to check the traffic in Linux. The following three methods can be used to check the current traffic. note: I think nload is very broken. for more information about the installation method, see another article on RPM