Regarding software:
The Nginx root directory contains the following folders:
client_body_temp conf fastcgi_temp html logs proxy_temp sbin scgi_temp uwsgi_temp
Folders ending in _temp are used to store temporary files generated during operation.
The other main folders are:
access records access-related information, error records errors, and nginx.pid records the service’s PID, that is, its process ID.Virtual machine: VMware Workstation 16 Operating system: CentOS 7.4 Download URL: https://vault.centos.org/centos/7.4.1708/isos/x86_64/CentOS-7-x86_64-Minimal-1708.iso[1]
Recommended computer configuration:
从 SQL 解析与执行流程出发，介绍基于规则和代价的查询优化、统计信息、执行计划枚举，以及 Apache Calcite 的开源实践。
...Shell is the language we use to communicate with the operating system through the command line.
Shell scripts can run directly on the command line, or a set of logic can be organized into a file for reuse. The command line can be thought of as a “shell script executing line by line.”
There are many common kinds of shell scripts in Linux, including:
/usr/bin/sh or /bin/sh)/bin/bash)/usr/bin/csh)/usr/bin/ksh)zshLinux systems generally use bash by default.
The file should begin with #! /bin/bash to specify bash as the script interpreter.
介绍 CUDA 的基本概念、支持的编程语言、发展历程及 GPU 加速计算的应用。
...整理 MySQL 常用语法、函数、约束、多表查询和事务，并介绍存储引擎、索引、执行计划与 SQL 性能优化。 文中的密码仅作示例，实际使用时请独立生成。
...Collect data
Define the model
Usually a function containing parameter variables: \(y=F_{\Theta}(X)\)
Example: \(y=\sigma\left(\Theta^{T} X\right)\)
Train Find the optimal parameters \(\Theta^{*}\) so that the model \(y=F_{\Theta^{*}}(X)\) achieves the highest accuracy on the training set
Predict For a new image \(\hat{X}\) , use the trained model to predict its class, namely \(\hat{y}=F_{\Theta^{*}}(\hat{X})\)
ssh user@hostname
user: usernamehostname: IP address or domain nameThe first time you log in, you will see this prompt:
The authenticity of host '123.57.47.211 (123.57.47.211)' can't be established.
ECDSA key fingerprint is SHA256:iy237yysfCe013/l+
Are you sure you want to continue connecting (yes/no/[fingerprint])?
Enter yes and press Enter. This records the server’s information in ~/.ssh/known_hosts.
Then enter the password to log in to the remote server. The default login port is 22. To log in through a specific port:
ssh user@hostname -p 22
Strictly speaking, most of what we learned in the JavaScript section belongs to ECMAScript. ECMAScript, or ES, defines language standards such as the syntax rules for variables, data types, expressions, statements, and functions. Browsers implement most of the ECMAScript specification and extend it with practical features. These extensions are called Web APIs.
