Linux

For some reason, we may need to reinstall the system. Generally, the downloaded ISO image file is installed, so there will be a lot of updates. For a system that has just been installed, we will always be prompted to download updates. Although

Generally, we execute some external tasks in Linux.ProgramYou may be prompted that the shared library cannot be found, for example: Tmux: Error while loading shared libraries: libevent-1.4.so.2: cannot open shared object file: no such file or

It is not difficult to implement a simple web server in Linux. A simple HTTP server is just an advanced file server that constantly receives HTTP requests sent by clients (browsers), parses requests, Processes requests, and then sends data back like

The setjmp and longjmp functions are introduced in the Process Section. These two functions are redirected with a blocked signal. In the signal processing program (hanlder) using longjmp will cause the signal to be blocked later. Posix.1 does not

Linux provides the memory ing function MMAP, which maps the file content to a memory segment (specifically, virtual memory). By reading and modifying this memory segment, to read and modify files, Let's first look at the MMAP function declaration:

In the previous article, semaphores have been used to achieve mutual exclusion between threads, achieving the effect of mutual exclusion locks. Today, this article describes how to use semaphores for synchronization. Mutex synchronization of

In the previous article, we introduced the creation and exit of threads and the use of related functions. The second parameter of the pthread_create function is about the thread attribute settings. This is all about today. These attributes mainly

Process is the basic unit of program execution and resource allocation in the system. Each process has its own data segment, code segment, and stack segment, which causes the process to play a field protection role during switchover and other

In Linux, CHMOD commands are often used on computers. Here is a detailed introduction. Every time you set invalid file properties in the province, you have to go to the online manual.Only the administrator can execute CHMOD. Normal users can execute

Working in a LINUX multi-directory command prompt is a pain point, but the following tips on using Linux CD commands and pushd to switch directories help you save time and effort.In the Linux Command Prompt, run the Linux CD command to change the

Here, mounting means that a Linux virtual machine can access a specified folder in a Windows system, including reading and writing. VMware Tools must be installed in the following Mount methods. Install VMware Tools. Right-click the Linux virtual

From: http://blog.163.com/dong_box/blog/static/26259778200956114858764/ Root file system creation (busybox1.9.2)(09:02:22) 1. Create a directory named rootfs to install the file system. 2 # mkdir bin Dev etc home lib MNT proc root sbin tmp usr VaR#

I have made several cross-Linux and Windows projects and encountered many problems. I wrote them down for examination. In addition, errors are inevitable because of the level. please correct me. Unless otherwise stated, all Linux mentioned in this

Total directory Preview General setup Enable loadable module support Enable the block layer block device layer Processor type and features CPU type and features Power Management and ACPI options Power Management Options Bus options bus

Zhou haihan/Wen 2010.4.26   When I use the root account to upload files to/root of a server, I am told that it is a read-only file system. I am confused. How does a good system become a read-only file system? Zhouhh @ zhh64 :~ $ SCP myfile serv

Linux optimization and Security Configuration Summary I have some simple understanding of Linux system security and optimization, and hope everyone can use Linux safely and efficiently to bring convenience to your work and life. (09:29:41)

VI usage in Linux Summary Guide to basic usage of VI in Linux (20:08:05) By lanf, Source: http://tech.ccidnet.com/pub/article/c302_a200213_p1.html Author: a library of Linux knowledge 1. Introduction to basic commands ---- 1. cursor command

There are few examples of general driver development in Linux on the Internet, or due to its simplicity, there are few introductions on DMA drivers. Due to work requirements of Zhaoyang, it took several days to develop the DMA Communication driver

Address Space: On a 32-bit Linux system, the process address space is 4 GB, including 1 GB of kernel address space and 3 GB of user address space. Kernel stack: The process control block task_struct stores information about the size of two

Command description Copy CP Transfer File move mv Delete file del RM List objects dir ls Create the mkdir directoryDelete the rmdir/RM directory Clear screen CLS clear/ResetClose shell exitDisplay and set dateDisplay the output on the screen