Linux

In the embedded development, sometimes need to do the source level debugging, can set breakpoints, step execution, compared to each step printing printf or printk, more friendly. This debugging method is described below. GDB cross-debugging is

OneRedHat AS4 System Installation:Disk configuration:Device type size/ext3 39911Swap 1024Network Basic configuration:Etho Ip/gateway:192.168.146.2/255.255.255.0Host Name:LinuxsvrGateway:192.168.146.1Main/TimesDns:202.103.96.68/202.103.96.112Firewall

The directory under Linux is described below:In the Linux system, everything is stored in a unique "virtual file system", the "virtual file system" is a tree-like structure to start with a root directory. File to represent all logical and

I. Installation of related components1. Installing ApacheInstall apache2After the installation is complete, the browser http://localhost/or http://127.0.0.1 appears it works will indicate OKApache configuration file directory:/etc/apache2Apache

Rights Management:R:W:X:Three types of users:U: OwnerG: Genus GroupO: Other usersChown: Change file owner (only administrators can use this command)# chown USERNAME File,... Change the owner of the file to this user-R Modify the owner of the

ReviewIn the previous article, we introduced the Linux driver debugging method, which describes the concurrency and the state of the drive programming and how to handle concurrency and contention.First, what is concurrency and normality? concurrency

Forget the root password of the original MYQL# /etc/init.d/mysqld Stop# Mysqld_safe--skip-grant-tables &&, which means running in the background, no longer running in the background, then open a terminal.# MySQLmysql> use mysql;mysql> UPDATE user

Note the contents of the red flagToday, on a VM virtual machine, a shared directory is required to mount a host (a Windows host in the ad domain) . But it's not always mounted. As shown below[Email protected] ~]# mount-t cifs-o username=xxx,password=

First, the basic conceptName resolution: The process of converting a user to the UID. Human use is the user name, the system identifies the UID code;User authentication: Confirm the user and password, verify whether the user has permission to log in

has always been using out-of-the-box UI framework, such as Microsoft's window, QT, etc., because it has a variety of controls (such as button, window, edit, etc.) have been encapsulated implementation, we just have to use it, also always think it is

1. File manipulation based on file pointers (buffering)Linux directory and device operations are file operations, files are divided into ordinary files, directory files, linked files and device files.1.1. File creation, opening and closingThe

Linux and the Device TreeThe Linux usage model for device tree dataAuthor:grant likely [email protected]This article describes how to use device tree in Linux. The Device Tree data format can be obtained from the

ReviewIn the previous article, we introduced the Linux driver debugging method, which describes the concurrency and the state of the drive programming and how to handle concurrency and contention.First, what is concurrency and normality? concurrency

Fork () function1. Required header file:#include #include2. Function definitionpid_t fork (void);pid_t is a macro definition whose essence is that int is defined in #includesys/types.h>Return value: If successful call returns two values, the child

Original source: http://www.cnblogs.com/peida/archive/2012/12/07/2806483.htmlThe Linux du command also looks at the space used, but unlike the DF command, the Linux du command is a view of the space used by the file and directory disks , or some

SELinux is a project launched by the National Security Agency to strengthen the system to a level that can reach the military. This also provides a stronger guarantee for Linux security.The so-called DAC, is the autonomous access control, that is,

The server listens to two ports, which are then connected by the client, and no end has a send thread and accept thread dedicated to sending and receivingService-side process: Create a socket, bind port (to populate the network address structure

1. Wait for the thread to exit 1.1. Waiting for thread to exitThreads are returned naturally from the entry point function, or the Pthread_exit () function is actively invoked to terminate the thread normally When a thread returns from the entry

Build the ubuntu eclipse C ++ EnvironmentInstall the java Development Environment package JDK Step 1: Download jdk-7-linux-i586.tar.gz  wget -c http://download.oracle.com/otn-pub/java/jdk/7/jdk-7-linux-i586.tar.gz (Note: If the download fails, we

Performance test comparison between Apache and Nginx in CentOSAfter apache2.4.1 is released, it is said that the performance target is directly directed to nginx. Therefore, you have compiled and installed two versions for stress testing on static