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1.Linux Security Model Resource allocation: Authentication: authentication to verify the user's identityAuthorization: authorization. Different users set different permissionsAccounting audit When the user logs in successfully, the system will automatically assign a token, including user ID, group member and other information 1.1 users In ...

Linux I2C application programming Equipment file /dev/i2c-x x is the I2C bus number, that is, a group of SCL and SDA. Multiple I2C devices can be connected to one bus. During communication, they are distinguished by device address and are not reflected in the system device file. For raspberry pie, when I2C function is enabled, there is a bus, ...

In the process of java development, we often need to encrypt data, such as sound, sensitive information and so on. We usually use MD5 encryption, SHA encryption, DES encryption, AES encryption, etc. Today we'll look at AES encryption. Source of the problem In the project, the code was well written, and there was no problem in the local te ...

Install and configure Nginx in Linux Environment preface It was the same project some time ago. Because the production environment was configured with nginx with domain name, it was found that the test environment had no domain name and was not installed after returning from the customer's site. Some problems were encountered during in ...

In order to better illustrate how to realize the mixed programming of C + + and CUDA in Linux, I will next realize the modular operation of each element of a matrix. 1. Header file and file form To write CUDA code in C + +, you need to import header files: #include "cuda_runtime.h" #include "cublas_v2.h" #include "device_launch_parameters.h" ...

Please indicate the source for Reprint: simiam.com Amway: py awesome Kit Py awesome kit is a python toolkit I have been tossing about recently. It provides functions commonly used in the process of big data development and data analysis. I hope it can be gradually enriched and improved in the future. Project address: https://github.com/monk ...

Relevant accessories for steamed rice Interested in downloading Learn some ROP notes of steamed rice and write a summary by yourself What is ROP The full name is return oriented programming. The core is to use the return instruction to control the execution order. As an advanced memory attack technology, it can bypass various simple defenses ...

Platform: Quanzhi A133 Android Q Start process Data flow throughout the whole article sensor0 ==> mipi0 ==> csi0 ==> isp0 ==> scale0(vipp0) ==> vinc0(dma0) ==> video0 sensor1 ==> mipi1 ==> csi1 ==> isp0 ==> scale1(vipp1) ==> vinc1(dma1) ==> video1 sensor, mipi, csi, isp, scale and vinc are all v4l2_s ...

This paper mainly describes how gcc generates static library (. a) and dynamic library (. so) to help us better carry out embedded programming. Because sometimes security is involved, static libraries or dynamic libraries may be provided for us to use. System environment: Ubuntu Desktop 18.04 1, What are static and dynamic libraries We u ...

Memory disk space [root@ZT-TEST ~]# df -h file system Capacity used available used% Mount point devtmpfs 3.9G 0 3.9G 0% /dev tmpfs 3.9G 0 3.9G 0% /dev/shm tmpfs 3.9G 402M 3.6G 11% /run tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/ ...