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- Install OpenVZ on CentOS and install OpenGauss on CentOS
- LINUX is a powerful operating system that provides many features and tools to meet various needs. This article introduces the steps to install OpenVZ and OpenGauss on CentOS. By using these virtualization and database management systems, you can better manage and optimize your server resources and improve system performance and security. LINUX knowledge sharing The `grep` command in the LINUX operating system is a very powerful text search tool. It can search for matching lines in files according to a specified pattern and display the results. If you want to search in a file For lines containing the keyword "centos", you can use the following command: grep "centos" filenam
- LINUX . regular-expression 1113 2024-02-11 23:48:08
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- How to parse filename formats such as 'PUBLIC001' using regular expressions?
- A file needing help with the regular expression for parsing filenames will be named PUBLIC001 "PUBLIC" is the static text in all filenames The last 3 digits - the day of the year. 001 (Jan1)-366 (December 31st of a leap year) is the valid range. What is a regular expression. Is there a way to limit the maximum value to 366? Thanks
- Java . regular-expression 1016 2024-02-11 21:57:08
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- Deepin Linux system installation tutorial
- Deepin Linux system is an operating system based on the open source Linux kernel, which has the advantages of stability, efficiency, security, etc. This article will introduce how to install Deepin Linux system on Win7 system. Preparation tools 1. Deepin Linux system image file 2. UltraISO software (used to make a bootable USB flash drive) 3. An empty USB flash drive (the capacity is recommended to be above 8GB) Installation steps 1. Download the Deepin Linux system image file and save it to in the computer. 2. Open the UltraISO software and insert the USB flash drive into the computer. 3. Select "File" - "Open" in UltraISO and select the downloaded Deepin Linux system image file. 4. Select "Start" in UltraISO -
- LINUX . regular-expression 814 2024-02-11 21:21:20
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- Ubuntu system security and Ubuntu security
- As an open source operating system, Ubuntu has always attracted much attention in terms of security. This article will discuss in detail the security of the Ubuntu system and how to strengthen the security of the system to ensure the integrity of user data and system. Ubuntu system security The Ubuntu system itself has high security, mainly based on the following aspects: 1. Updates and vulnerability fixes: Ubuntu regularly releases security updates and patches to fix known vulnerabilities and make up for system security. Users can Keep your system up to date with automatic or manual updates. 2. User rights management: Ubuntu uses user rights management to restrict users’ access and operations to the system. Ordinary users only have limited rights and require administrator rights to proceed.
- LINUX . regular-expression 710 2024-02-11 18:48:17
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- Python script for reading different message patterns
- I'm trying to make a flexible python script that reads and extracts some weather variables from a synop code. This is the code: importredefextract_data_12_utc(message):#patternmessagepattern=r'(\d{5}),(\d{4}),(\d{2}),(\d{2}),(\d{ 2}),(\d{2}),aaxx(\d{5})(\d{5})(\d{5})(\d{5})(1\d{4})( 2\d{4})(3\d{4})?(4\d{4})
- Python Tutorial . regular-expression 620 2024-02-11 14:24:04
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- Basic linux commands - text editing vim
- This article introduces the general usage of vim (version 7.4). ****vim is a powerful text editor and an enhanced version of vi. The most commonly used command to use vim to edit a file is: vimfile is a new file or an original file. After executing such a command, the editor will be opened and the contents of the file file will be displayed. As shown in the figure: If it is a new file, the word "file" [new file] will be displayed on the left side of the bottom, and 0,0-1 will be displayed on the right to indicate the number of lines and characters where the current cursor is. If an old file is opened, the words "file" 3L, 66C are displayed on the left side of the bottom, indicating the file name, the line number of the current cursor, and the total number of bytes of the file. Places with no characters in the file will begin with the character ~.
- LINUX . regular-expression 500 2024-02-11 10:39:32
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- regex.ReplaceAll but adds the same number of characters if replacing
- I want a regex match replacement that compares the number of characters replaced with the number of characters replaced, and the missing characters are replaced with spaces. The bigger goal I want to achieve is to have a template with fields and borders that may change (so the number of characters available in some fields may vary), and instead of hardcoding it, I Want to leave a certain number of characters acceptable to the user. My regex statement: \[\s{0,}\w{1,}\s{0,}\] Example template with regex placeholder: |[test1]|[test2]| [test3]|
- Golang . regular-expression 862 2024-02-11 10:30:18
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- Runtime optimization of regular expressions
- Most regular expressions are "constant" throughout their lifetime. Is it a good idea to use global regular expressions to speed up execution? For example: funcwork(){r:=regexp.mustcompile(`...`)ifr.matchstring(...){...}} Compare: varr*regexp.Regexpfuncwork(){ifr.MatchString(... ){...}}funcinit(){r
- Golang . regular-expression 690 2024-02-11 10:15:08
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- Installing Deepin Linux and Docker Deepin in Docker: realizing lightweight virtualization and efficient development environment
- With the continuous development of virtualization technology, Docker has become the preferred containerization tool for developers. It can provide consistent development, testing and production environments on different operating system platforms. This article will introduce how to install Depth in Docker. Linux and DockerDeepin provide developers with a more efficient and lightweight virtualized development environment. Introduction to Docker Docker is an open source application container engine that allows developers to package their applications and dependencies into a portable container and then publish it to any popular Linux machine, which can also be virtualized. Introduction to Deepin Linux Deepin Linux is a Debian-based distribution, which is known for its stability,
- LINUX . regular-expression 1042 2024-02-10 22:48:08
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- 10 Linux commands programmers need to know
- As a programmer, you will use Linux systems more or less in your software development career, and you may use Linux commands to retrieve needed information. This article will share 10 useful Linux commands for developers. I hope it will be helpful to you. The following are the Linux commands we will introduce today: mantouch,catandlesssortandgrepcutsedtarfinddiffuniqchmod. Let us introduce them in detail one by one. 1. man command The first Linux command you need to know is the man command, which can display the usage and description of the specified command. For example, if you want to know the usage and options of the ls command, you can
- LINUX . regular-expression 1122 2024-02-10 20:57:13
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- Go: Split a string of comma-separated key/value pairs. Commas may be embedded in a given key/value pair.
- I'm fairly new to the Go language and am looking for a way to split a variable length string into a map where the key/value pairs (all strings) are comma separated and only some variations of the string may have multiple Comma and/or colon in the given key/value pair. For example: String 1 variant keyword 1 = value 1, keyword 2 = value 2, keyword 3 = value 3, value 4, value 5, keyword 4 = value 6... String 2 variant keyword 1=value1,keyword2=value2,keyword3=value3,value4,value5:value6,value7,value8,keyword4=value9...where "..." reflects to the fact that there will be a variable # key/value pair. I hope to end up with a map like this: map[string]s
- Golang . regular-expression 1201 2024-02-10 19:54:08
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- Golang regular expression splits string based on keywords
- This is my string like findstudentbyid Now I'm going to split based on the keywords before the find word before the find word and by and by and after id. So the golang regex pattern is `(?i)(^find{1})(\w+)(by{1})(\w+)` I am trying to split this keyword findstudentbyid but I am facing a problem and cannot Find the exact results I found. My expected output is [find student by id] or findsstudentbyid but I am not able to do that. I did try this golang code p
- Golang . regular-expression 832 2024-02-10 15:15:08
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- Telegraf: How to extract from fields using regex processor?
- I want to use the telegraf regex processor plugin to extract the values of connection, upstream and downstream from this input: 2022/11/1622:38:48inthelast1h0m0s,therewere10connections.trafficrelayed↑60mb,↓4mb. Using this configuration, the result key is "upstream" is a copy of the original message, but does not contain part of the "regular expression" content. [[processors.regex]]tagpass=["snowflake-proxy"][[processors.r
- Golang . regular-expression 884 2024-02-10 12:15:07
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- Detailed explanation of Debian service installation and Debian server installation
- Debian is a popular Linux distribution known for its stability and reliability. On a Debian system, installing services and servers becomes relatively simple because of the help of the powerful package management tool apt, which we will introduce in detail below. Steps to install services and servers on Debian. Debian service installation 1. Update the package list: Before installing any service, first ensure that the package list on the system is up to date. This can be achieved by running the following command: ```sqlsudoaptupdate``` 2. Install the service: Use Installing a service with apt is very simple, just run the following command, replacing "service-name" with the name of the service you want to install:
- LINUX . regular-expression 1115 2024-02-09 23:18:22
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- How to use ALDE files for efficient data exchange in Linux
- In Linux systems, we often face situations where data needs to be exchanged between different applications and operating systems. The traditional method is to export data files to formats such as XML or CSV for exchange, but this method is usually cumbersome and inefficient. Today, we will introduce to you a more efficient way of data exchange - ALDE files, and how to use ALDE files for fast data exchange in Linux systems. AIDE (Advanced Access Detection Environment) is a file integrity checker and access detection program. The main purpose of this feature is to check file integrity and audit which files on the computer have been changed. AIDE is found from the /etc/aide.conf configuration file
- LINUX . regular-expression 625 2024-02-09 22:33:22
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