Linux

Beginners in Linux for C + + programming will encounter "'cout ' in this scope has not been declared " error. Many people will find it very strange, I am in strict accordance with C + + syntax to write, why also at compile-time prompt "' cout ' in

Environmental ubuntu12.04 Because the desktop version of the default installed, and the sound is also very convenient, here is the server version of the configuration, after all, do the development often or with the server version of 1.

Any operating system written in a high-level language, the kernel source code is always a small part of the code is written in assembly language. Readers who read the Unix Sys v source know that there are about 2000 lines of code written in assembly

When debugging audio codec, it is sometimes necessary to read the value of the codec register to confirm that the register was successfully configured.Remember before debugging wm8978, found this codec register can not read, each read the result is 0

Linux systems do not automatically recognize and load new devices like Windows systems, requiring manual identification and manual loading. Everything in Linux is file. The file is organized by a large file tree, and the root directory of the file

errno is thread-safe under Linux 2011-06-20 11:34:54 Category: Linux in Linux or UNIX environments, errno is a very important part. When there is a problem with the called function, we can determine the cause of the error by errno value, which

https://blog.csdn.net/liuxingen/article/details/47057539 Linux System () and Popen () differences 1. System () and Popen () Introduction In Linux we can execute a shell command through system (), and Popen () is also executing shell commands and

Linux PCI/PCI-E Device configuration space Read and modify 1 Preface PCI and PCI Express, is a high-speed bus commonly used by computers. PCI/PCI-E device drivers and operating system cores in the operating system require access to PCI and PCI-E

1. Create a new user and set a password > Useradd suser > passwd suser//Enter password 2. Set up sshd configuration file > cd/etc/ssh/ > CP sshd_config sshd_config.back//Backup > VI sshd_config Note If the line does not comment it will

Reprint http://blog.sina.com.cn/s/blog_4fc7368a0100okbq.html 1, multicast and broadcast need to be in the LAN to achieve, and also to see whether the Linux system support multicast and broadcast: Ifconfig up broadcast multicast mtu:1500 metric:

First, Iso/osi Reference Model The OSI (open System Interconnection) Open Systems Interconnection model is a network-layered model defined by ISO (International Organization for Standardization), a total of seven layers, The following

basic knowledge of Unix operating system1. What is UNIX? UNIX is a computer operating system, which is a control program used to coordinate, manage and control computer hardware and software resources.What are the features of the 2.Unix operating

1. Download the libevent-2.0.14-stable.tar.gz package (enter your own location first)1.1 Cd/home/guilf/downloads (This is where I put it)1.2 wget http://cloud.github.com/downloads/libevent/libevent/libevent-2.0.14-stable.tar.gz (will download

NOTE: * Compress into limited. zip format filesCommon decompression:[Email protected] test]# Unzip-o test.zip-d tmp/Unzip the compressed file Test.zip under the specified directory TMP , and require the unzip command to overwrite the original file

The Linux system is controlled by the cron (Crond) system service. Linux systems have a lot of planned work on them, so this system service is started by default. In addition, because the user can set up scheduled tasks themselves, the Linux system

Redhat Linux Network configuration, basically by modifying several configuration files to achieve, although you can also use Ifconfig to set the IP, with the route to configure the default gateway, with the hostname to configure the hostname, but

Use expect to implement automatic logon script, there are many online, but there is no clear explanation, beginners are generally copied, collection. But why do you want to write this but do not know it. This article uses a shortest example to

Use Debugfs to recover RM deleted files under Linux?? The following methods are tested on the Ext3 file system and are implemented by root? Mainly with the help of DebugfsFdisk/dev/vdaMkdir/mnt/testMount/dev/vda3/mnt/test1 running Debugfs, entering

ObjectiveThe development direction of operations, centralization, automation, standardization, virtualization, distributed.This article shows a tool for automating the development of operations: Ansible. Ansible has many advantages, only need ssh

7.6 "Linux learning is not difficult" file/directory Management (6): mkdir command to create a directoryUse the mkdir command to create a directory on a Linux system.Command syntax:mkdir [Options] [contents]The meanings of the options in the command