Tag：source file
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Package MySQL workbench
sudo apt-get install python3-rosdeprosdep where-defined ANTLR4sudo rosdep initrosdep update sudo apt install g++ libx11-dev swig antlr4 libantlr4-runtime-dev gtk+-3.0 gtkmm-3.0 libpython3.7-dev libpython2.7-dev libgdal-dev libssh-dev https://blog.csdn.net/czsnooker/article/details/120058151 sudo rosdep init This may report an error:ERROR: cannot download default sources list from:https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/sources.list.d/20-default.listWebsite may be down.Reason: the website is blocked and can be accessed through VPNresolvent:1. It […]
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What is the difference between hard connection and soft connection?
Hello, I amLate days。 Hard connection and soft connection are two methods to connect files in the hard disk. A hard connection is essentially a synchronous copy of a file that directly references the inode of the source file. Soft connection directly refers to the source file, and the source file then refers to inode, […]
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An instance of the source file and number of lines where PostgreSQL prints log information
I’ve been curious about how to output the error log in PG with the name of the source code file where the error message is located and the number of lines of code where the error occurs postgres. In conf, the redundancy level of log information is “default”, terse: indicates simpler log information, verbose: indicates […]
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[securities practice] basic knowledge of Finance – Chapter IV stock 03
Note 1: follow up study and arrange it into Chapter 8. After the completion of the whole book, it will be combined into a note for source file sharing Note 2: the content of this chapter is huge. It is divided into three articles to record digestion
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[securities practice] basic knowledge of Finance – Chapter V bonds 01
Note 1: follow up study and arrange it into Chapter 8. After the completion of the whole book, it will be combined into a note for source file sharing Note 2: this chapter contains a great deal of content, which is roughly divided into two articles to record digestion
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Summary of big data Hadoop spark cluster deployment knowledge (I)
Summary of big data Hadoop spark cluster deployment knowledge 1、 Start / close Hadoop myhadoop.sh start/stop Step start: Step 1: on hadoop102 host sbin/start-dfs. sh Step 2: sbin/start-yarn sh Step by step close: Step 1: sbin/stop-yarn sh Step 2: on hadoop102 host sbin/stop-dfs. sh myhadoop. SH script file contents #!/bin/bash if [ $# -lt 1 […]
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[Alibaba cloud image] update Alibaba open source image – Ubuntu image
1、 Introduction Ubuntu is a desktop application based operating system based on Debian Linux, covering word processing, e-mail, software development tools and web services, which can be downloaded, used and shared by users for free. 2、 Configuration method 1. Graphical interface configuration operation Graphical Ubuntu operating system installation steps reference link:Ubuntu 20.04 installation process This […]
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Linux multi process — using MMAP mapping to copy files
1、 MMAP shared mapping area 1. Create mapping area function MMAP void *mmap(void *addr,size_t length,int prot,int flags,int fd,off_t offset); Addr ， pass null Length: length of transmission mapping area prot PROT_ Read readable PROT_ Write ， writable flags MAP_ Shared; The modification of memory will affect the source file (the source file is the file […]
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[go] environment variable
reference material Go language gopath details (go language working directory) 1.GOPATH $ go env Goarch = “AMD64” # goarch indicates the target processor architecture Gobin = “” # Gobin indicates where the compiler and linker are installed GOEXE=”” GOHOSTARCH=”amd64″ GOHOSTOS=”linux” Goos = “Linux” # goos indicates the target operating system Gopath = “/ home / […]
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Audio video-h264 coding
H264 coding principle andAudio video AAC codingThe principle is almost the same. The difference is that the processing of buffer buffer is realized through H264 encoder Brief logic of AAC coding: Source file = = “avframe = =” encoder = = “avpacket = = > output file Abbreviated logic of H264 encoding Source file = […]
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The date difference of the new file when copying the file under different methods / systems, and the method of viewing the file creation time, modification time and access time
1: There was a dog headed man namedThe only shame, is the Earl of paradox, the master of Nintendo, Ubisoft’s bug, the pile driver of Polish donkey.1: He has three wives, a windows, a Linux and a MacOS.1: Every year the dog went up from his city to Shiloh to worship and sacrifice the king […]
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Installing Intel gigabit network card driver under Linux system
The linux driver directly downloaded from Intel website is e1000-5.2.52 tar. GZ (the version may change), there is no compiled version in this compressed package O files that need to be compiled under the Linux system before they can be used, Because the network card needs to be compiled, it is necessary to confirm that […]