Linux

Recently, I was working on a project in Linux to remotely control embedded devices using Bluetooth on my mobile phone. I am working on a project. the Bluetooth communication problem has been basically solved, and the rest of the task is to parse the

The current Bluetooth project will run a server on ARM-Linux to listen to requests. To be more automated, I want the Board to start and automatically load the initialization ProgramAnd the server program. After searching for half a day,

1)./etc/sysconfig/Network is mainly used to set the Host Name and whether the network can be started. After changing this file, you must restart Linux to make it take effect. 2 ). /etc/sysconfig/network-scrips/ifcfg-eth0 set Nic parameters, such

Recently, someone asked me how to skip login in ARM Linux, so I decided to write it. Although it was very simple, many people still don't know how to skip login. After the root file system is created, as shown in the following figure: Console:

1. Interruption Mechanism 1 reuqest_irq is likely to sleep 2 Linux interruption cannot be reentrant. 3. Shared interruption. When an interruption occurs, each shared interrupt processing function is called in sequence. 4. Soft Interrupt

Finally, Google found a lot of information about programming and development in GNU/Linux, but it is less and more complex than that in windows. GNU/Linux itself is an ide. This is the truth. You can achieve almost all the work in the console!

In Linux, clock_gettime is used to explain the program timing. The function prototype is as follows:Int clock_gettime (clockid_t clk_id, Struct timespect * TP ); Clockid_tClk_id is used to specify the time clock type. It is commonly used for the

Linux environment variables 1. Introduction In Linux, If you download and install an application, it is very likely that the prompt "command not found" appears when you type its name. If you find the executable file in the installation target folder

Introduction:This article describes some timing-related problems and solutions in Linux. In the course of learning and research, we often need to count the time consumption of programs or segments and evaluate their performance. Therefore, we often

1. List of the most common commands The following lists the ten commands that are frequently used in Linux. Here is a brief introduction. For detailed usage, refer to the following content. Cat: displays the file content. CD to change the

PS: View processes in the system. In Linux, you can use PS-Aux to view all processes. The W parameter indicates the command line for widening display. The w parameter can be written multiple times. Generally, it can be written three times at most,

To shut down a Linux instance, you must use the following methods: [Root @ localhost/] # shutdown [-T seconds] [-arkhcncff] [time] [prompt information] [root @ localhost/] # shutdown-H 10' I will shutdown after 10 mins' -T sec: -T plus the second,

Superblock, inode, data block, directory block, and indirection block. The superblock:It contains information about the filesystem as a whole, such as its size (the exact information here depends on the filesystem ). An inode:It contains all

1. Download xmame (APT-Get install xmame -*) 2.download the kof97.tar.bz2 file to my resource and put it in the/usr/share/games/xmame/rooms/folder: (Note that all the names in the folder must be in lowercase) 3. Enter xmame kof97 in the terminal.

# Include # include # include # include # include # include # include # include # include # define bind_port 9999 # define buffsz 4096int main (INT argc, char * argv []) {// extern int socket (INT _ domain, int _ type, int _ protocol) //

Linux allocates and releases page boxes in the memory area using a partner system. For example, only 2 ^ n pages can be allocated for Linux distribution pages. The kernel maintains max_order linked lists. Each linked list records consecutive idle

The memory management mechanisms of modern operating systems include segment management and page management.Segment-based memory management refers to dividing the memory into segments. The starting address of each segment is the base address of the

1. System Configuration HOST: ubuntu8.04lts desktop edition Development Board: friendly arm qq2440v3 Host IP: 192.168.1.10 subnet mask: 255.255.255.0 broadcast address: 172.16.53.255 Development Board IP: 192.168.1.10 broadcast address: 172.16.53.255

Editor's note: The following small commands may be something that these Linux giants are playing on the rise, however, this also proves the phrase "Programmer are just like children no matter how old he is" (well, it is roughly like this, that is:

The UNIX system is not installed, the system is not easy to obtain, and there is no need to install UNIX. Linux is the best choice. In addition, I was originally a Ubuntu system, so I set up the environment in Ubuntu. 1. Install the compiler.