The difference and correlation between embedded Linux and 51/430/stm32 embedded development

Embedded Linux and 51/430/stm32 Embedded development of the Difference and Association summary: Microcontroller series: 8051, MSP 430, STM32 f0-3 (ARM cortext m0-m3 series), etc.The main feature is that there is no memory management unit, no Linux

Linux Process Management

Process ManagementProcess ProcessesA process opened by an applicationPIDProcess IDType:User space ProcessKernel space ProcessTo view the status of a process statically# PS[[Email protected] ~]# PS>>>> View the process of this terminalPID TTY Time

CPU affinity in Linux (affinity)

0. Prepare knowledgeHyper-Threading Technology (hyper-threading): Using special hardware instructions, the two logical cores (CPU core) are simulated into two physical chips,Allows a single processor to use thread-level parallel computing, which is

Linux operation and architecture--full-network backup project Solution

1. Description of the project requirementsA company has more than one server, the data is very important, if the disk is broken, the data will be lost, so the company required to backup important server data in case of problems can be restored,

Linux System parameter Statistics script

#!/bin/shClearif[[ $#-eq 0]] Then#Define Variable reset_terminalreset_terminal=$(tput sgr0)#Check OS Typeos=$ (Uname-o) echo-E ' \e[36m '"Operating System Type:" $Reset _terminal $OS#Check OS realease Version and Nameos_name=$ (cat/etc/issue |

Read and write executable permission issues for folders and files under Linux system

Linux is a multi-user operating system, Linux for all files within the file system, the implementation of strict permissions division management. Prevents users who do not have permissions from accessing a file.The permissions of a Linux file or

Linux system composition

LinuxMainly applicable to server Open source2, more maximize the performance of hardware resourcesLinux System composition:Kernel kernel System Release ReleaseRHEL Red

Linux uses Mutt to send mail/attachments

Email is extremely handy with mutt, with just one command to send or bulk mailFunction Description: E-mail Management program.Syntax: Mutt [-hnprvxz][-a][-b][-c][-f][-F][-H][-i ][-m][-s][email address]Added: Mutt is a text-mode mail management

Use of compression and packaging under Linux


File directory Compression/DecompressionFile compression/decompression------GZIP/BZIP2/XZ1) gzip *.gzCompression:[Email protected] ~]# Gzip/file/1.txt[Email protected] ~]# file/file/1.txt.gz/file/1.txt.gz:gzip compressed data, was ' 1.txt ', from

Fastdfs installation and configuration of Distributed file system under Linux

1.fastdfs Distributed File System, the main functions of the file management, including file storage, file synchronization, file access (file upload and download), etc.Solves the problem of mass storage and load balancing.The two cores of the

Linux Command Encyclopedia

1 filesLs-rtl #按时间倒序列出所有目录和文件 (Ll-rt similar to LS-RTL)Touch File #创建空白的文件RM-RF Directory Name # does not prompt to delete non-empty directories (-R Recursive Delete, F Force)Dos2unix Windows text to Linux textUnix2dos Linux text to Windows texteNCA

Linux Primary shipping Koriyuki Directory Management Command (LS,CD,PWD,MKDIR)

ls command:-list directory contents Command Description: List Directory contentsCommon Command Options-L: Use a list of detailed formats.-A: Lists all files and directories (used to display hidden files that begin with.).-A: Displays all files and

Mp4v2 porting and brief introduction of MP4 video recording library under embedded Linux

*************************************************************************************************************** ************Easywave Time: 2014.10.31Category: Linux application-mp4 video recording library mp4v2 transplant experience and brief

Linux file Management Summary of its own definition more

1.more Command function More commands to view text that is more than one screen (similar to cat)Basic Features :1. Input BACKSPACE: Content Turn One screen2. Enter ENTER: The contents of the flip line3. Enter Q: Exit4. Real-time display of


1. First use Help to understand Su, sudo su, sudo2. Second, understand "login Shell" and "interactive shell"."When Bash starts executes the commands in a variety of different scripts.(1) When started as an interactive login Shell:bash reads and

ACL permissions for files in Linux systems

An important part of the administrator's job is "manage accounts". Because the entire system is your management, and all the general user's account application must be assisted by you. In the first two blogs, we introduced the basic permissions of

Linux Key Knowledge Summary

1th Chapterthe composition of the computerCPU Hard Disk Memory power2nd ChapterMemoryMemory is a temporary storage file, data loss after power outageProgram: Write data to diskProcess: Running program read in memoryDaemon: A program that has been

Linux Server--all user login Operation command Audit

Linux User Action Records we can see history by command, but if you delete important data because someone mistakenly manipulated it, then the Linux Historical command is basically not going to work much. How do we look at the Linux user operation

Linux Multi-process multithreading related concepts

process : An executable is a static entity that is stored on a disk device by code and data that is organized in a format, while a process is dynamically run by the code that can be dispatched. In a Linux system, each process has its own life cycle.

Linux multithreaded Programming-sleep and pthread_cond_timedwait

#include #include int flag = 1;     void * THR_FN (void * arg) {while (flag) {printf ("******\n");   Sleep (10); } printf ("Sleep test thread exit\n");   } int main () {pthread_t thread;     if (0! = pthread_create (&thread, NULL, THR_FN, NULL))

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