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- How to initialize a USB device on Linux
- Restore a damaged USB device to its original state Linux system disk manager warning: The following operation will format all data on your device. Regardless of the reasons mentioned above, the end result is that we can no longer use this device. So here is a method to restore a USB device or SD card to its factory state. Most of the time a simple formatting through the file browser will solve the problem, but in some extreme cases where the file manager doesn't work and you need your device to continue working, you can use the following guidance: We A small tool called mkusb will be used to achieve this goal. The installation of this tool is very simple. Add the mkusb repository: sudoaptaddr
- LINUX 620 2024-04-22 14:40:01
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- SCP usage tips-recursively exclude files
- One can use the scp command to securely copy files between network hosts. It uses ssh for data transfer and authentication. Typical syntax is: scpfile1user@host:/path/to/dest/scp -r/path/to/source/user@host:/path/to/dest/scp exclude files I don't think you can when using scp command Filter or exclude files. However, there is a good workaround to exclude the file and copy it securely using ssh. This page explains how to filter or exclude files when copying directories recursively using scp. How to use rsync command to exclude files The syntax is: rsyncav-essh-
- LINUX 809 2024-04-22 09:04:01
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- Create a simple APT warehouse Quickly build a simple APT warehouse
- As part of my job, the PATHspider I maintain relies on some functionality in cURL and PycURL that has just been merged or is still waiting to be merged. I need to build a Docker container containing these Debian packages, so I need to quickly build an APT repository. The Debian repository is essentially a static website, and the content is GPG signed, so it doesn't necessarily need to be hosted somewhere trustworthy (unless availability is critical to your application). I host my blog on Netlify (a static website host) which I think would be a good fit for this situation. They also support open source projects. You can install netlif with the following command
- LINUX 1137 2024-04-21 09:04:23
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- vim bug in Debian
- I've been wondering why vim on my server behaves so stupidly when it comes to the mouse: it can't jump, copy, and paste like usual. Although it is already set in /etc/vim/vimrc.local. setmouse=Finally I figured out why, thanks to bug#864074 and fixed it. The reason is that when there is no ~/.vimrc, vim loads defaults.vim after vimrc.local, thus overriding several settings. There is a comment in /etc/vim/vimrc (although I don't see it) that explains this: "Vimwillload$VIMRUNTIME/defaults.
- LINUX 920 2024-04-20 09:04:01
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- ORB-SLAM2 Beginner's Notes
- The system contains modules common to all SLAM systems: 1. Tracking, 2. Mapping, 3. Relocalization, and 4. Loopclosing. The key points are as follows: ORB-SLAM is mainly divided into three threads Progress: The three threads of Tracking, LocalMapping and LoopClosing are stored in corresponding three files, namely Tracking.cpp, LocalMapping.cpp and LoopClosing.cpp files. (1) The main work of this part of tracking is to extract ORB features from the image.
- LINUX 1091 2024-04-19 21:22:01
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- Quickly set up Linux operating system and Oracle database
- Preparation work: 1. Download and install Oracle's virtual machine software -VirtualBox: Here 2. Download OraclePre-BuiltDeveloperVMs (forOracleVMVirtualBox):Here. Find DatabaseAppDevelopmentVM in the Pre-BuiltVM page. This virtual machine template has built-in OracleLinux and many Oracle database development related software, and you can get started with almost no configuration. Let’s take a look at the software list: OracleLinux6.5OracleDatabase12cRele
- LINUX 818 2024-04-19 09:25:01
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- Install python3 under Linux CentOS7
- Under CentOS7, python2.7 is installed by default. Now I will teach you how to install python3: 1. First install the dependencies that may be used by python3.6 #yum-yinstallopenssl-develbzip2-develexpat-develgdbm-develreadline-develzlib-devel2. Download Python source code package, the address is https://www.python.org/downloads/source/, and then upload it through xftp, or directly use the wget command, wgethttps://www.
- LINUX 515 2024-04-18 12:20:01
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- Ideas to solve the problem that Xshell cannot connect to the virtual machine
- The first time I used xshell, I couldn't connect to Linux. I tried it for a long time and searched many solutions, but finally I solved it. Here I will share my own solution and list the solutions on the Internet. I hope it can help others. . 1. Your linuxip address is not configured. The ip address is not configured. You need to configure it yourself. There are many configuration methods on the Internet. Here is one: enter the vim/etc/sysconfig/network-scripts/ifcfg-eth0 command to change the content of this file to the following: Set the ip yourself, for example It is: 192.168.1.155 and then enter ifconfig-a to find your own IP and change it. 2Change yourself
- LINUX 1158 2024-04-17 09:01:06
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- Build a Git server under CentOS
- 1. First, you need to install Git. You can use the yum source to install it online: [root@localhostDesktop]#yuminstall-ygit2. Create a git user to run the git service addusergit3. Initialize the git warehouse: Here we choose /data/git/learngit. git as our git repository [root@localhostgit]#gitinit--barelearngit.gitInitializedemptyGitrepositoryin/data/git/learngit.git/ execute the above command
- LINUX 1261 2024-04-15 19:13:01
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- How to install postfix and set up sasl on CentOS6
- 1. CentOS6 has postfix installed by default. If the system does not have postfix, you can use the following command to install it. [root@mail~]#yum-yinstallpostfix2. Configure the main.cf of postfix, and configure smtp-auth to use the sasl function of dovecot. [root@mail~]#vi/etc/postfix/main.cf#Line 75: Remove the comment and set the host name. myhostname=mail.opsky.top#Line 83: Remove the comment and set the domain name. mydomain=opsky.top#Line 99: Remove the comment.
- LINUX 717 2024-04-15 14:30:01
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- Detailed explanation of the double type in C++ and how to retain three decimal points
- We know that in C language, if the output result is required to retain three decimal places, we can use the pritf() function to easily solve the problem. But C++’s output operator
- LINUX 917 2024-04-15 11:25:20
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- How to create custom monitoring items with zabbix
- Background: Zabbix itself provides many optional monitoring items, which can meet most monitoring needs. Sometimes due to business needs, monitoring items need to be customized. The following takes creating a MySQL custom monitoring item as an example to share how to create a Zabbix custom monitoring item. Environment description: zabbix version: 3.0.3 Operating system: CentOS7 mysql version: 5.7.1 Implementation steps: 1. Modify zabbix_agentd.conf and add zabbix_agent configuration directory. The following is the configuration of my local zabbix: remove the comments from the following lines# Include=/usr/local/etc/zabbix_agentd.c
- LINUX 818 2024-04-14 21:01:16
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- A comprehensive list of visual SLAM solutions
- MoNoSLAM uses the extended Kalman filter as the backend, tracks the very sparse feature points on the front end, uses the current state of the camera and all landmark points as state quantities, and updates its mean and covariance. Advantages: In 2007, with the improvement of computer performance and the system's sparse way of processing images, this solution enabled the SLAM system to run online. (Previous SLAM systems basically could not run online, and could only rely on robots to carry data collected by cameras, and then perform positioning and mapping offline.) Disadvantages: MoNoSLAM has narrow application scenarios, a limited number of road signs, and coefficient feature points are easily lost, etc. Disadvantage, its development has now been stopped. PTAM(ParallelTrackingAndMappi
- LINUX 545 2024-04-14 13:31:01
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- How to deploy CSVN server on CentOS6.7
- Server required components: Minimal installation is acceptable (personal test), additional required components: jdk-8u91-linux-x64.gz, CollabNetSubversionEdge-5.1.4_linux-x86_64.tar.gzCollabNetSubversionEdge-5.1.4_linux-x86_64.tar.gzCollabNetSubversionEdge- 5.1.4_linux-x86_64.tar.gzstep1: Upload these two software packages to the /opt directory of the server and install jdk1.8tarzxvfjdk-8u91-l
- LINUX 507 2024-04-14 09:43:23
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- Implementing the apple and bug problem using C++
- Recently, I was tutoring children for the Olympiad Mathematical Olympiad class. I read a few questions and thought it would be more focused to write them down. Let’s sort them out. Hahaha. The problem is as follows: Apples and worms: You bought a box of n apples. Unfortunately, a worm was mixed into the box when you finished buying. The worm can eat one apple every x hours. Assume that the worm eats one apple. If you won't eat another one before, how many whole good apples do you have after y hours? Sample input: 1049 (meaning a box of 10 apples, eat one in 4 hours, how many will be complete after 9 hours?) Sample output: 7 Code implementation: Note that it is rounded up, and the default is down Rounded. The code is as follows: #include#includeusingnamespacestd;/*
- LINUX 470 2024-04-14 09:20:21
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